6th grade math part 4

To choose a mascot for a new middle school, 8th-grade students were polled, and their top choice was selected as the mascot. Was the sample a biased sample?

yes

Which statement correctly finds the interquartile range for the set of data represented by the box plot? 14 - 1 = 13 11 - 6 = 5 11 - 1 = 10 6 - 1 = 5

11 - 6 = 5

Barton has 4 strawberries and Ona has 8. If they want to redistribute their strawberries so they each have an equal number, how many strawberries should Ona give to Barton? There are a total of __ strawberries. There are a total of _ people. The expression to find the mean, or balance point, is ___. ___ should give 2 strawberries to ______ for the number of strawberries to be balanced.

12 2 12/2 Ona Barton

The five values for a data set are: minimum = 11 lower quartile = 12 median = 23.5 upper quartile = 27 maximum = 33 Where will the different sections of the box plot be located? The box will go from __ to 27. A line dividing the box will go at ____. The left whisker will go from. 11 to __. The right whisker will go from __ to 33.

12 23.5 12 27

The national average height for girls in the sixth grade is also 52 inches. Find the average height of the girls in this class. The total number of girls is __. The total height of the girls is ___ inches. The expression to find the mean is 734/14. The average height of the girls in this class is ____ inches.

14 734 734/14 52.4

Which value should be added to this data set to produce a mean of 13? __ should be added to the data set to produce a mean of 13.

18

Which sets contain one or more outliers? Check all that apply. 187, 298, 239, 1, 984, 202, 191 5, 3, 8, 6, 3, 6, 1, 2, 0 15, 19, 21, 16, 25, 13, 17 56, 1, 5, 72, 67, 59, 74, 60 88, 7, 32, 31, 34, 39, 34, 35, 33

187, 298, 239, 1, 984, 202, 191 56, 1, 5, 72, 67, 59, 74, 60 88, 7, 32, 31, 34, 39, 34, 35, 33

A bar graph titled New Gym Memberships has Dates on the x-axis and Membership on the y-axis. There were 68 new memberships in January, 60 in February, 52 in March, 21 in April, 11 in May, 0 in June through August, 19 in September, 18 in October, 15 in November, and 11 in December. Use the histogram and the drop-down menus to complete the statements. This histogram has _ clusters. The clusters tell us when there is a ______ frequency of new memberships. The peak in _______ tells us when the ____ new memberships were sold. The intervals on the graph where there are no bars tell us there were ____ new memberships sold.

2 higher January most zero

Carol wanted to see how the data would change if she did not include the outlier in her study. The results are shown in the table with the outlier crossed out. Find each listed value. Range = __ Median = __ Lower quartile and upper quartile = __ ___ __ Interquartile range = ____ Which value was affected the most? _____

20 38 29 and 42.5 13.5 Range

Meg has 2 berries, Paul has 2 berries, Mia has 5, Yen has 7, and April has 9. If they all put their berries together and then divide them up equally, how many will each one of them have? There are a total of __ strawberries. There are a total of _ people. The expression to find the mean, or balance point, is ____. After redistributing, each person will have _ berries.

25 5 25/5 5

The histogram shows the results of a survey asking students how many video games they currently own. How many observations were used to create the display? __

27

Steven received scores of 70, 95, and 80 on his last three math tests. He needs a mean test score of 80 to qualify for the math team. How many points does he need on his last test to qualify for the team? Steven needs ___ total points to have a mean score of 80. Steven has ___ points so far. Steven needs to score at least __ points on his last test to qualify for the team.

320 245 75

Given the histogram, use the drop-down menus to identify the elements. Zero frequency: _______ A peak: _______

351-400 651-700

A dot plot labeled Times Riding a Roller Coaster goes from 1 to 6. 1 has 5 dots, 2 has 4 dots, 3 has 6 dots, 4 has 3 dots, 5 has 4 dots, and 6 has 1 dot. You asked amusement park visitors the question "How many times did you ride a roller coaster today?" as they left the park. The dot plot shows the results Of those surveyed, how many people rode a roller coaster 5 times? _ people.

4

In a high school league, there were 256 touchdowns made last year. If 64 games were played, what is the mean, or the average, number of touchdowns made per game? 4 192 320 16,384

4

Carol did a study to look at the number of television viewers who watched nightly news in various classes in her school. The results are shown in the table. Find each listed value. Range = __ Median = __ Lower quartile and upper quartile = __ ___ __ Interquartile range = __

46 72 38.5 32 and 45 13

The table shows Janisa's scores in an archery tournament qualifying event. Janisa needs a mean score of 8 to qualify for the archery tournament. How many points does she need on her last arrow to qualify for the tournament? Janisa needs __ total points to have a mean score of 8. Janisa has __ points so far. Janisa needs to score _ points on her last arrow to qualify for the tournament.

48 39 9

Journalists try to use shorter or simpler words in their news stories whenever possible. The box below shows the number of letters in each word taken from one sentence in a news article. What are the mean and median number of letters per word? What is the outlier? The mean number of letters per word = _ The median number of letters per word = ___ The outlier = _____ __ __ _______

5 4.5 there is no outlier.

What percentage of data points do the two whiskers contain? 25% 30% 50% 75%

50%

Brian has 5 marbles, Sarah has 9 marbles, Jimi has 4 marbles, and Juan has 6 marbles. They want to redistribute the marbles so that each person has the same number of marbles. If the marbles are redistributed, then how many should each person get? Each person should get _ marbles.

6

A phone company report on the number of texts sent each day included these displays. For each statement, select the answer that correctly compares the two plots. A typical 8- to 12-year-old texts __ times per day. A typical 13- to 17-year-old texts ____ _____ ____ a typical 8- to 12-year-old.

62 more often than

Follow the steps below to find the mean for the set of data. Use the work shown to help you. Data set: 6, 5, 8, 5, 9, 6, 7, 5, 12 First add the values. 6 + 5 + 8 + 5 + 9 + 6 + 7 + 5 + 12 = 63 Then divide by the number of values. There are 9 values. What is the mean of the data set? 5 6

7

How old were you when you lost your first tooth? A 2-column table with 4 rows. Column 1 is labeled Age with entries 4, 5, 6, 7. Column 2 is labeled Tally with entries 2, 3, 4, 2. A dot plot titled Number of Hours Spent on Homework goes from 4 to question mark. 4 has 0 dots, 5 has 3 dots, 6 has 0 dots, and question mark has 2 dots. Use the information in the table to complete the dot plot. The number missing on the number line is _. There should be _ dots above the number 4. There should be _ dots above the number 6. A good title for the dot plot is ___ ___ ____ ____ _____ _____.

7 2 4 Age You Lost Your First Tooth

The bar graph shows the number of songs Karen downloaded each month. Use the data to find each listed value. Median = _ Lower quartile = ___ Upper quartile =___ Interquartile range = _

7 3.5 8.5 5

Find the median of each set of data. 12, 8, 6, 4, 10, 1 6, 3, 5, 11, 2, 9, 5, 0 30, 16, 49, 25

7 5 27.5

Bian is keeping track of the money she saves every month for college. Find the mean amount of money Bian saves every month. First, find the total amount of money. $ ___ Second, find the total number of months. _ The mean, or average, is found by dividing ___ by _. The average amount of money that Bian saves every month is $ ___.

720 6 720 6 120

Some of Mrs. Turay's eighth graders took the PSAT test. Score totals of ten of her students are below. Calculate the mean and the median, and determine which provides a better view of the score data. Scores: 60, 62, 67, 69, 70, 70, 71, 75, 76, 120 The mean test score total is __. The median test score total is __. Which measure of center best represents the test data? ______

74 70 median

Derrick needs to figure out how he's doing on his test scores so far this year. You can help by calculating the mean and the median to get an overall picture of his scores. Below are all of his scores: 25, 40, 68, 85, 95, 98, 70, 78, 85, 100 What is Derrick's mean test score so far? ____ What is Derrick's median test score so far? ____ Which gives a better picture of his scores? ______

74.4 81.5 median

What is the range? The range is _.

8

Sasha wants to know her average grade on her math tests. She earned a score of 70 on two tests, an 80 on one test, and a 90 on two tests. What is Sasha's mean score? 70 75 80 90

80

The number of bus riders was recorded on one route. The data have these values: minimum = 18, lower quartile = 22, median = 26, upper quartile = 29, and maximum = 37. Which box plot represents the data? mc001-1.jpg mc001-2.jpg mc001-3.jpg mc001-4.jpg

mc001-2.jpg

Consider the means of the samples shown in the table. Which value is least likely to be the mean of the population from which the samples were taken?SampleSample Mean115.2217.1316.9412.2518.0616.3717.4 12.2 15.3 16.4 17.5

A

The table shows the mean number of basketball goals made by four random samples of players from the school team during this year's season.Sample #Sample MeanNumber of Goals17243548Is a valid prediction for the mean of the population possible using these samples? No, there are not enough samples. Yes, the sample means are all less than 10. Yes, the variation of the sample means is small. No, the variation of the sample means is too great.

A

Why will random samples from a given population not have the same mean? Sample means will vary because the data values selected for samples are not randomly chosen. Sample means will vary because for each sample the same data values are selected. Sample means will vary because the data values are randomly selected from different populations. Sample means will vary because the data values selected for each sample will be different.

A

A dot plot titled Number of Hours Spent on Homework goes from 1 to 6. There is 1 dot above 1, 5 dots above 2, 6 dots above 3, 4 dots above 4, 1 dot above 5, and 1 dot above 6. What is a dot plot and how do you read it? Check all that apply. A dot plot is a simple plot that displays data values as dots above a number line. Dot plots show the frequency with which a specific item appears in a data set. 3 students spent 4 hours on homework. 5 students spent 2 hours on homework. Dot plots show the distribution of the data. Students spent 1 to 6 hours on homework.

A dot plot is a simple plot that displays data values as dots above a number line. Dot plots show the frequency with which a specific item appears in a data set. 5 students spent 2 hours on homework. Dot plots show the distribution of the data. Students spent 1 to 6 hours on homework.

Identify the location of the values used to create a box plot. A = B = C = D = E =

minimum value lower quartile median upper quartile maximum value

Which data collections show bias? Check all that apply. Ten numbered tickets were selected from a bowl containing all raffle tickets sold. A bank asked its 25 wealthiest customers to complete a satisfaction survey. Fifth graders were asked what desserts should be served with school lunches. Every tenth semi-trailer was pulled over and weighed at the state border. College students at the honors library were asked who they voted for in the last election.

A bank asked its 25 wealthiest customers to complete a satisfaction survey. Fifth graders were asked what desserts should be served with school lunches. College students at the honors library were asked who they voted for in the last election.

The same data are graphed in each histogram, but with different intervals. Which histogram has the best interval to draw conclusions on the height of the shortest player? A bar graph titled Height of players has height in inches on the x-axis and players on the y-axis. 4 players have a height of 60 to 69 inches and 12 players have a height of 70 to 79 inches. A bar graph titled Height of players has height in inches on the x-axis and players on the y-axis. 2 players have a height of 60 to 64, 2 have a height of 65 to 69, 7 have a height of 70 to 74, 5 have a height of 75 to 79. A bar graph titled Height of players has height in inches on the x-axis and players on the y-axis. 1 player has a height of 60 to 63, 2 have a height of 64 to 67, 3 have a height of 68 to 71, 7 have a height of 72 to 75, and 3 have a height of 76 to 79.

A bar graph titled Height of players has height in inches on the x-axis and players on the y-axis. 1 player has a height of 60 to 63, 2 have a height of 64 to 67, 3 have a height of 68 to 71, 7 have a height of 72 to 75, and 3 have a height of 76 to 79.

Which graph is a histogram? A bar graph titled Spring sports has sport on the x-axis and students on the y-axis. 50 students do track, 28 students play soccer, and 32 students play tennis. A bar graph titled Spring sports has grade on the x-axis and students on the y-axis. 3-4 grade has 38 students, 5-6 grade has 44 students, and 7-8 grades have 20 students. A bar graph titled Spring sports has school on the x-axis and students on the y-axis. Elementary has 80 students and middle has 20 students.

A bar graph titled Spring sports has grade on the x-axis and students on the y-axis. 3-4 grade has 38 students, 5-6 grade has 44 students, and 7-8 grades have 20 students.

Which box plot represents data that contains an outlier? A box-and-whisker plot. The number line goes from 1 to 10. The whiskers range from 1 to 9, and the box ranges from 3 to 8. A line divides the box at 7.5. A box-and-whisker plot. The number line goes from 1 to 10. The whiskers range from 1 to 10, and the box ranges from 6 to 8.5. A line divides the box at 7.5. A box-and-whisker plot. The number line goes from 1 to 10. The whiskers range from 1 to 9, and the box ranges from 2 to 7. A line divides the box at 4. A box-and-whisker plot. The number line goes from 1 to 10. The whiskers range from 3 to 9, and the box ranges from 5 to 7. A line divides the box at 6,

A box-and-whisker plot. The number line goes from 1 to 10. The whiskers range from 1 to 10, and the box ranges from 6 to 8.5. A line divides the box at 7.5.

Which dot plot has the greatest number of observations? A dot plot going from 0 to 4. 0 has 2 dots, 1 has 3 dots, 2 has 4 dots, 3 has 2 dots, 4 has 0 dots. A dot plot going from 0 to 4. 0 has 0 dots, 1 has 0 dots, 2 has 1 dot, 3 has 5 dots, 4 has 3 dots. A dot plot going from 0 to 4. All numbers have 2 dots.

A dot plot going from 0 to 4. 0 has 2 dots, 1 has 3 dots, 2 has 4 dots, 3 has 2 dots, 4 has 0 dots.

Alonzo describes a histogram as having a cluster from 20-50, a frequency of 0 from 10-20, and a peak at 40-50. Which histogram is he describing? A histogram titled Reading logs with number of pages on the x-axis and students on the y-axis. 1 student read 0 to 10 pages, 0 read 10 to 20, 8 read 20 to 30, 12 read 30 to 40, and 18 read 40 to 50. A histogram titled Reading logs with number of pages on the x-axis and students on the y-axis. 1 student read 0 to 10 pages, 8 read 10 to 20, 0 read 20 to 30, 12 read 30 to 40, and 18 read 40 to 50. A histogram titled Reading logs with number of pages on the x-axis and students on the y-axis. 1 student read 0 to 10 pages, 0 read 10 to 20, 8 read 20 to 30, 18 read 30 to 40, and 12 read 40 to 50.

A histogram titled Reading logs with number of pages on the x-axis and students on the y-axis. 1 student read 0 to 10 pages, 0 read 10 to 20, 8 read 20 to 30, 12 read 30 to 40, and 18 read 40 to 50.

Choose the set of letters that represents each situation. The range of the data = _ __ _. The top 25% of the data = _ __ _. The interquartile range = _ __ _.

A to E D to E B to D

Chin researched the body weight, in pounds, of professional football players. He created a table of different sample means from his data.SampleSample Mean(pounds)124022363245424352386242Which statements are true? Select three choices. The variation in the sample means makes it possible to make predictions about the population mean. The actual population mean is greater than 236. The actual population mean is less than 245. The actual population mean is greater than 245. The population mean is the average of the sample means.

ABC

Three runners recorded their times for the 40-yard dash over the period of a year. Use the table to complete the statements. The fastest runner is _____, because she had the _____ ____ _______ ____. The most consistent runner is ______, because she had the _____ ______________ _____ _____.

Alana least mean running time Lorena least interquartile range value

Charles asked his teammates how many hours they practiced swimming during the week. He recorded his data in the table below and used the shaded columns to calculate three sample means. What is the range of the values for the sample means?Hours of Swim Practice45363835476245352346 1 2 3.75 4.75

B

Dima asked her seventh-period class how many times they attended a summer camp since first grade. She put her data in the table and used the shaded rows to find three sample means.Summer Camp Attendance3104142305011204144232014What is the range of the values for the sample means? 1 1.2 1.8 2

B

The table displays the mean for seven random samples.SampleSample Mean123.2226.7324.9424.6528.0626.3723.4Which value is the best estimate of the mean of the population? 22.9 24.2 28.2 29.1

B

Mariela earned the following test scores in math: 95, 90, 100, 85, 80 Mr. Adams accidentally entered Mariela's next test score as 0. Which of these statements are true? Check all that apply. Before the error, the mean and the median were both 90. Before the error, the mean was 90 and the median was 100. The error added an outlier to the data set. After the error, the median remained the same. After the error, the mean was 75 and the median was 87.5. The mean was impacted by the error more than the median. Only the median was impacted by the error.

Before the error, the mean and the median were both 90. The error added an outlier to the data set. After the error, the mean was 75 and the median was 87.5. The mean was impacted by the error more than the median.

Find the median, range, and interquartile range of both sets: Set 1: 65, 66, 77, 79, 81, 93, 104, 105 Set 2: 56, 1, 29, 72, 67, 59, 74, 60 Which is true about the two sets? Set 1 has a range of 40 and a median of 85. Set 2 has a range of 74 and a median of 62. Both sets have an interquartile range of 27. Set 2 has data that is closer to its median than Set 1.

Both sets have an interquartile range of 27.

Looking at the means of these samples, which value is most likely to be the mean of the population from which the samples were taken?Sample NumberSample Mean111.8212.5315.1414.3513.0612.9 10.2 11.5 12.9 15.4

C

Luke was asked to find the median of the following numbers: 16, 24, 12, 7, 30, 11, 22 The work below shows the steps he used. What error did Luke make? He forgot to put the numbers in order first. He crossed off the low and high pairs incorrectly. He left out a number when putting the numbers in order. He did not make an error.

He left out a number when putting the numbers in order.

Nadya put the data she collected during her survey in a table. Then she found the mean of each of the four rows of data.Population Data24545242434324434432Find the mean from each row of data. Between what values will the mean of the actual population be found? 3.2 and 3.4 3.2 and 4 3.4 and 4 3 and 4

D

The diagram shows the number of dollars each child in a family has. How can they redistribute the money so that each child has the same amount? Check all that apply. Each child who has $9 must give away $4. Each child who has $9 must give away $2. Each child who has $5 must be given $4. Each child who has $5 must be given $2. When fairly balanced, each child has $7. When fairly balanced, each child has $8.

Each child who has $9 must give away $2. Each child who has $5 must be given $2. When fairly balanced, each child has $7.

Which are true statements about histograms? Check all that apply. Data are organized by categories. Data are organized in equal intervals. Bars can go in any order. Bars must appear in numerical order. Bars are not touching. Bars are always touching.

Data are organized in equal intervals. Bars must appear in numerical order. Bars are always touching.

More than 340 million people visit theme parks each year. Do you think it is because of the roller coasters? You can find 624 roller coasters at theme parks in the United States. The fastest coaster can reach 128 mph! If you want to learn about the roller-coaster riding habits of people, which is the best statistical question you could ask those leaving an amusement park? Did you ride a roller coaster today? How fast is the coaster you rode today? How many times did you ride a coaster today? How many roller coasters are there at this park?

How many times did you ride a coaster today?

Which statements are true about the interquartile range? Select all that apply. Subtract the lowest and highest values to find the interquartile range. Interquartile ranges are not significantly impacted by outliers. Lower and upper quartiles are needed to find the interquartile range. A small interquartile range means the data is spread far away from the median. The data values should be listed in order before trying to find the interquartile range.

Interquartile ranges are not significantly impacted by outliers. Lower and upper quartiles are needed to find the interquartile range. The data values should be listed in order before trying to find the interquartile range.

Four students conducted the same science fair project to determine the battery life of a specific brand of batteries. Alice tested 4 batteries. Justin tested 18 batteries. Katarina tested 8 batteries. Noah tested 5 batteries. Which student's data would be most representative of the brand's battery life? Alice Justin Katarina Noah

Justin

The table shows information about donations made to an animal shelter. In calculating the mean donation amount, which steps would you need to take? Check all that apply. Multiply each donation amount by the number of people. Add the total amount of money. Add the total number of people. 2,550 ÷ 25 = $102 25 ÷ 2,550 = $0.01

Multiply each donation amount by the number of people. Add the total amount of money. Add the total number of people. 2,550 ÷ 25 = $102

Three students found the mean of the data set given. Their work is shown below. Choose the student who correctly found the mean. 10, 10, 13, 14, 16, 19, 23 Naeem's Work. Start Fraction 10 + 10 + 13 + 14 + 16 + 19 + 23 Over 7 End Fraction = Start Fraction 105 Over 7 End Fraction = 15 Preston's Work. Start Fraction 10 + 13 + 14 + 16 + 19 + 23 Over 6 End Fraction = Start Fraction 95 Over 6 End Fraction = 15.8 Calida's Work. Start Fraction 10 + 23 Over 2 End Fraction = Start Fraction 33 Over 2 End Fraction = 16.5

Naeem's Work. Start Fraction 10 + 10 + 13 + 14 + 16 + 19 + 23 Over 7 End Fraction = Start Fraction 105 Over 7 End Fraction = 15

Which statements are true about the median? Check all that apply. Put the values in numerical order before trying to find the median. Median is a number that is much lower or much higher than the rest of the numbers. The median is always greatly impacted by outliers. The median is the number in the middle of an ordered set of values. The median must be calculated by finding the mean of the two middle points when there is an even number of data points.

Put the values in numerical order before trying to find the median. The median is the number in the middle of an ordered set of values. The median must be calculated by finding the mean of the two middle points when there is an even number of data points.

Which of the following are measures of spread? Select all that apply. Range Outliers Interquartile range Mean Median Quartiles

Range Interquartile range Quartiles

Why is the question below a statistical question? Check all that apply. How many different states have you visited? Only one person can answer this question. The question provides useful data about a group of people. Many people can answer the question. There is only one answer to this question. There will be many different answers to the question. The data collected helps us understand the differences in a group of people.

The question provides useful data about a group of people. Many people can answer the question. There will be many different answers to the question. The data collected helps us understand the differences in a group of people.

The dot plots show the ages of players on two soccer teams. Which statements are true? Check all that apply. The Lions have more variability in the ages of their players. The Eagles have more variability in the ages of their players. The Lions have more players. The Eagles have more players. The mean of the ages of Lions is less than the mean of the ages of Eagles.

The Eagles have more variability in the ages of their players. The Eagles have more players.

Which statements are true given the histogram? Check all that apply. The histogram is symmetrical. The histogram is evenly distributed. The cluster from 4 p.m.-10 p.m. means that most of the texts were sent in the afternoon and evening. More texts were sent from 6 p.m.-8 p.m. than from 8 p.m.-10 p.m. The peak from 4 p.m.-6 p.m. means that the highest number of texts was sent during this interval.

The cluster from 4 p.m.-10 p.m. means that most of the texts were sent in the afternoon and evening. The peak from 4 p.m.-6 p.m. means that the highest number of texts was sent during this interval.

What do you know about this data before finding the range or the interquartile range? 187, 191, 202, 209, 218, 1984 The values are not in order. The outlier will have no effect on the range. The data has an outlier; therefore, the interquartile range is much greater than it would be without the outlier. The data has an outlier; therefore, the range will be much greater than it would be without the outlier.

The data has an outlier; therefore, the range will be much greater than it would be without the outlier.

Dean describes the data in the histogram as having a cluster from 30-60 and a peak at 40-49. He says the intervals 0-9 and 80-89 show a 0 frequency. Lastly, he says that the graph is not symmetrical. Why is Dean incorrect? The graph does not show a peak. There is no cluster in this data set. The graph does not show intervals with 0 frequency. The graph is symmetrical.

The graph is symmetrical.

What values do you need to know to create a box plot? Select all that apply. interquartile range lower quartile maximum value mean median range

lower quartile maximum value median

The histogram shows the number of text messages sent by two high school juniors on one Monday. Which statement most reasonably explains the hours when 0 texts were sent? The students were asleep and did not have phones turned on. The students only had100 text messages available. The students were in school and were not allowed to text. Texting is done in clusters.

The students were in school and were not allowed to text.

Which statements are true about box plots? Check all that apply. They help describe sets of data. They include the mean. They show the data split into four parts. They show outliers through really short "whiskers." Each section of a box plot represents 25% of the data.

They help describe sets of data. They show the data split into four parts. Each section of a box plot represents 25% of the data.

Use the data in the table to answer the question. A 2-column table with 6 rows. Column 1 is labeled Number of Siblings with entries 0, 1, 2, 3, 4, 5. Column 2 is labeled Tally with entries 3, 7, 3, 4, 1, 2. Which number line would be needed to create a dot plot for the data on the number of siblings? a number line from 0 to 5 a number line from 1 to 5 a number line from 0 to 7 a number line from 1 to 7

a number line from 0 to 5

Number of Amusement Park Visits You asked amusement park visitors the question "How many amusement parks have you visited this summer?" The tally table shows the results. Which number line would be best to use to create a dot plot of the set of data? a number line from 0 to 4 a number line from 1 to 5 a number line from 2 to 7 a number line from 0 to 7

a number line from 1 to 5

The histogram shows the number of payphones that were active by year in a large city. How many payphones would you expect to be active between 1976 and 1980? over 200 between 150 and 200 between 50 and 100 fewer than 50

between 150 and 200

If no additional information was given, which display type would not show the number of observations? bar graphs box plots dot plots histograms

box plots

The histogram shows the monthly sales for a greeting card company in one year. Which best describes the data for May-June and October-December? clusters no frequency gaps symmetry

clusters

A 2-column table with 4 rows. Column 1 is labeled Hours with entries 3, 4, 5, 6. Column 2 is labeled Tally with entries 4, 6, 3, 5. Kerri made a dot plot from the given table: Hours Spent at Park A dot plot titled Hours Spent at Park going from 3 to 6. 3 has 5 dots, 4 has 3 dots, 5 has 6 dots, and 6 has 4 dots. Does Kerri's dot plot match the data in the tally table? Use Kerri's dot plot to complete the statements. classmates spent 3 hours at the park. classmates spent 4 hours at the park. classmates spent 5 hours at the park. classmates spent 6 hours at the park.

no 5 3 6 4

Decide if each question is statistical or nonstatistical. How many hours did Rahul sleep last night? What is your favorite sport? What is Noya's favorite book? How far away do you live from your school?

nonstatistical statistical nonstatistical statistical

A bar graph titled Time Students Spent Studying with hours on the x-axis and students on the y-axis. 3 students spent 0 to 59 minutes, 5 students spent 1 to 1 hour and 59 minutes, 7 students spent 2 to 2 hours and 59 minutes, 4 students spent 3 to 3 hours and 59 minutes, and 1 student spent 4 to 4 hours and 59 minutes. Use the drop-down menus to answer the questions. What do the numbers on the left, or y-axis, represent? How many students spent 2 or more hours studying? How many students spent fewer than 2 hours a night studying?

number of students 12 8

The histogram represents the number of hours band students practice their instruments. Use the drop-down menus to complete the statements. The bars represent ______ __ _______. According to the histogram, _ students spend 3 or more hours practicing. According to the histogram, _ students spend fewer than 2 hours practicing.

number of students 5 8

The histogram shows how many employees have worked at a restaurant for the given intervals of time. The shape of the histogram is ______ ____ because most employees have worked at the restaurant for a while. There is an outlier in the interval of ___ months.

skewed left 1-3

A bar graph titled A C T Scores has A C T Scores on the x-axis and students on the y-axis. 2 students scored 10 to 12, 7 scored 13 to 15, 14 scored 16 to 18, 23 scored 19 to 21, 28 scored 22 to 24, 23 scored 25 to 27, 14 scored 28 to 30, 7 scored 31 to 33, 2 scored 34 to 36. Use the histogram and the drop-down menus to complete the statements. This histogram can be described as ___________ because the bars on the left side of the graph are the mirror image of the bars on the right side of the graph. Because the histogram is ___________ the data are ______ distributed.

symmetrical symmetrical even

The frequency table will be used to make a histogram. Use the drop-down menus to answer each question regarding the histogram. What will the horizontal axis represent? Which interval should be used for the horizontal axis? What will the vertical axis represent? What is an appropriate scale for the vertical axis?

temperature 20 number of days 0-100