Knewton Alta Lesson 4 Assignment

Josslyn is a car salesperson who keeps track of her sales over time. The line graph below shows how many cars she sells per week. What was the change in cars sold from week 2 to 6? Do not include the unit in your answer.

-8 We can see that at week 2 the value is 16 and at week 6 the value is 8. Therefore, the difference is 8−16=−8.

Several people were asked to report the number of hours of sleep they average per night. The results are shown in the histogram below. How many of those people average greater than 4.5 but less than 6.5 hours of sleep per night?

11 people Remember that the height of each bar in a histogram equals the number of values that are in the range for that bar. So to find the number of values which are greater than 4.5 but less than 6.5, we look at the heights of the bars between those values and add them. 7+4=11

The following data set provides bitcoin transactions throughout 2016 and 2017. What is the ratio of days of transactions between 300,000 and 349,999 conducted in May 2017 as compared to April 2017?

13:9 In May 2017, 13 days had transactions between 300,000 and 349,000. In April 2017, 9 days had transactions between 300,000 and 349,000.

The speed (in mph) of randomly selected bicyclists were measured as they were approaching a hill. The results are presented in the following histogram. How many of those bicyclists were traveling greater than 8.5 but less than 11.5 mph as they were approaching the hill?

22 bicyclists ​ Remember that the height of each bar in a histogram equals the number of values that are in the range for that bar. So to find the number of values which are greater than 8.5 but less than 11.5, we look at the heights of the bars between those values and add them. 4+5+13=22

Given the following histogram for a set of data, how many values in the data set are greater than 10.5 but less than 12.5?

5 Remember that the height of each bar in a histogram equals the number of values that are in the range for that bar. So to find the number of values which are greater than 10.5 but less than 12.5, we look at the heights of the bars between those values and add them. 2+3=5

Marc is keeping track of the total number of movies he has watched over time. The line graph below shows the data where the number of movies corresponds to the number of movies that had been watched at the beginning of the week shown on the horizontal axis. How many movies did Marc watch between the beginning of week 1 and the beginning of week 5? Do not include the unit in your answer.

7 We can see that at week 1 the value is 2 and at week 5 the value is 9, so the difference is 7.

According to the data given in the previous question, what can the travel agency conclude about the sampled families? Select the correct answer below: According to the data, a majority of the sampled families did not go on vacation. According to the data, a majority of the sampled families went on vacation twice. According to the data, a majority of the sampled families went on vacation no more than once. According to the data, a majority of the sampled families went on vacation at least twice.

According to the data, a majority of the sampled families went on vacation no more than once. This response is not correct. 3 families did not go on vacation. 11 families went on vacation once.

If the gym was going to expand only one part of their gym to provide more space, which area should they most likely expand? Select the correct answer below: According to the data, the gym should expand the pool. According to the data, the gym should expand the weight room. According to the data, the gym should expand the runner's track. According to the data, the gym should expand the aerobics room.

According to the data, the gym should expand the runner's track. According to the data, if the gym could only expand one room, the gym should expand the track. 22 people chose running as their preferred work-out, which has the highest bar in the bar graph.

Given the data above, after tallying up the wins during the chess club meeting, which member of the club was most likely the winner? Select the correct answer below: According to the data, the member, Karen, was most likely the winner. According to the data, the member, Joe, was most likely the winner. According to the data, the member, Michelle, was most likely the winner. According to the data, the member, Barbara, was most likely the winner.

According to the data, the member, Barbara, was most likely the winner. According to the data, Barbara won 12 games of chess during the past month. Since she has the highest bar in the bar graph, Barbara was most likely the winner when the scores were tallied during the chess club meeting.

According to the information above, which of the following is an appropriate analysis of the sales from the paper supplier? Select the correct answer below: From the data, the paper supplier had continued increasing sales over the 11 days. From the data, the paper supplier had continued decreasing sales over the 11 days. From the data, the paper supplier had decreasing sales from day 0 to day 5. After day 5, the sales increased. From the data, the paper supplier had increasing sales from day 0 to day 5. After day 5, the sales decreased.

From the data, the paper supplier had increasing sales from day 0 to day 5. After day 5, the sales decreased. According to the line graph, at day 0, the paper supplier had 0 sales. The sales jumped to 3.9 by day 5, but then decreased to 0.4 in sales by day 11.

A travel agency is conducting research on how many times families went on vacation during the last year. The following table shows the number of times sampled families went on vacation. Vacation Frequency None 3 Once 1 1 Twice 9 Three times 6 Four times 3 Create the corresponding bar graph to represent this data below. Drag the dots on the top of the bar graph to create the chart.

Remember that the height of each bar in a bar graph equals the number of values that fall in that bar category. So for example, to find the first bar, which represents no vacations, we note that the frequency for no vacations is 3 in the table, so the height of that bar is 3. Therefore, 3 families did not go on vacation during the last year.

A gym is conducting research on their customer's preferred work-out routine during the week. The following table shows the preferred work-outs for the selected gym customers. Activity Frequency Running 22 Swimming 16 Walking 8 Weight Lifting 8 Aerobics 5 Create the corresponding bar graph to represent this data below. Drag the dots on the top of the bar graph to create the chart.

Remember that the height of each bar in a bar graph equals the number of values that fall in that bar category. So for example, to find the first bar, which represents running, we note that the frequency for running is 22 in the table, so the height of that bar is 22. Therefore, 22 people chose running as their preferred exercise.

A chess club meets every month and the members each tally how many times they won a game of chess during the past month. The following table shows the number of wins for each member of the club. Members Frequency Joe 0 Aaron 6 Karen 7 Michelle 7 Barbara 12 Create the corresponding bar graph to represent this data below. Drag the dots on the top of the bar graph to create the chart.

Remember that the height of each bar in a bar graph equals the number of values that fall in that bar category. So for example, to find the first bar, which represents the number of wins for Joe, we note that the frequency for wins by Joe is 0 in the table, so the height of that bar is 0. Therefore, Joe won 0 games of chess during the past month.

The following data set provides bitcoin transactions throughout 2016 and 2017. Caluculate the average number of transactions conducted during April 2017 and May 2017. Which of the following statements are true? Select all that apply. Select all that apply: The average number of transactions in April 2017 was between 250,000 and 299,999. The average number of transactions in May 2017 was between 300,000 and 349,999. The average number of transactions shows a decline in business from April to May. The difference in the number of average transactions conducted during April and May was about 46,000. The difference in the number of average transactions conducted during April and May was about 4,600.

The average number of transactions in April 2017 was between 250,000 and 299,999. The average number of transactions in May 2017 was between 300,000 and 349,999. The difference in the number of average transactions conducted during April and May was about 46,000. The May average was 324227.1154. The April average was 278557.7667. The difference between the two is 45,669.35 or about 46,000.

The data listed below represents the copy paper sales, in hundreds of dollars, from a paper supplier by day. Value Frequency 0 0 2 2.6 5 3.9 7 1.2 9 0.8 11 0.4 Create the corresponding line graph to represent this data below.

The x-axis represents the time in days and the y-axis represents the number of sales. According to the data, there should be points at (0,0) (2.2.6) (5,3.9) (7,1.2) (9,0.8) (11,0.4) where the x variable represents the number of days and the y variable represents the number of sales. For instance, in the paper supplier's 5th month, they had $3.9 hundred dollars in sales.

The following data set provides bitcoin transactions throughout 2016 and 2017. What is the relative frequency for transactions between 350,000 and 399,999 in May 2017? Give your answer as a decimal to the nearest hundreth.

To find the relative frequency of all data values, divide each frequency by the total number of data values in the sample-in this case, 26. An additional column is added to the right side of the frequency table for the data. This is called a relative frequency table.

Given the relative frequency table below, which of the following is the corresponding cumulative relative frequency table? Value Frequency 4 0.28 5 0.24 6 0.04 7 0.2 8 0.24

Value Frequency 4 0.28 5 0.52 6 0.56 7 0.76 8 1 Remember that a cumulative frequency table adds the relative frequencies for the previous entries in the table. For example, the entry for the value 6 is 0.28+0.24+0.04=0.56 This cumulative frequency table could be used by an internet provider to see the percentage of customers that rate the service from a least 4 - most 8. For example, at the 6, 56% of people voting have the service at a 6 or less. This could show the internet provider that upgrades may be needed.

The following frequency table gives the number of students of each age at a Montessori school. Which histogram accurately summarizes the data? Value Frequency 4 7 5 6 6 7 7 6 8 4 9 15

X-axis from 3.5 to 9.5 Remember that the height of each bar in a histogram equals the number of values that are in the range for that bar. So for example, to find the first bar, which has values greater than 3.5 but less than 4.5, we note that the frequency for 4 is 7, so the height of that bar is 7.