Ch. 8 Quiz Review
B. 5
1. What is the interquartile range for the information shown in the above box and whisker plot? A. 7.5 B. 5 C. 3 D. 2
D.
10. Which box plot represents a situation where 75% of the data is 200 or less?
B. range = 14. IQR = 10
2. For the information shown in the box and whisker plot, what is the range and what is the interquartile range? A. range = 15, IQR = 10 B. range = 14, IQR = 10 C. range = 14, IQR = 9 D. range = 5.5, IQR = 4.5
Each piece of the box plot is worth what percent?
25%
D. median = 6.5, range = 14, IQR = 10
3. For the information shown in the box plot, what are the median, range and interquartile range? A. median = 6.5, range = 14, IQR = 12 B. median = 6.5, range = 15, IQR = 10 C. median = 7, range = 14, IQR = 10 D. median = 6.5, range = 14, IQR = 10
D. The box plot is correct
4. The high temperatures for Concord, CA, for October 1-15, 2005, are given. Look at the box plot of these data below. What, if anything, is wrong with this box plot? A. The value of the lower quartile is incorrect. B. The median is incorrect C. The value of the upper quartile is incorrect D. The box plot is correct
A. 35
5. The box plot shows the masses, in grams, of several specimens of rock collected by a geologist. What is the range of the masses? A. 35 B. 33 C. 36 D. 12
How old are the animals at the zoo?
Non-Statistical
B.
6. The data set 5, 6, 7, 8, 9, 9, 9, 10, 12, 14, 17, 17, 18, 19, 19 represents the number of hours spent on the internet in a week by students in a math class. Which box plot represents this data?
A.
7. The number of laps around a track for five runners are 14, 8, 7, 4, 12. Display the data using a box plot.
D. 34
8. The performance review for several employees at a company are shown in the box plot. What is the range of the performance review scores? A. 31 B. 36 C. 20 D. 34
D. median or range
9. The box and whisker plot shows the number of hours students in Holly's class spent volunteering last summer. Which of the following would be the most accurate measure of central tendency for the data? A. mean or mode B. mean or median C. mode or range D. median or range
How old is the athlete?
Non-Statistical
How old is your dog?
Non-Statistical it is only talking about one dog.
Do you like watermelons?
Non-Statistical it is only talking about you no one else.
How many days are in March?
Non-Statistical the days in the month of march are set
What is the average number of cars in the parking lot on Monday mornings?
Statistical because you are using multiple cars and multiple days so there can be multiple answers.
11
Determine the mean absolute deviation 29, 59, 36, 44, 62, 34
6
Determine the mean absolute deviation 5, 20, 13, 6, 1
2
Determine the mean absolute deviation 4, 5, 9, 4, 8
7
Determine the mean absolute deviation 6, 5, 6, 3, 4, 30
3rd Quartile - 1st Quartile
Interquartile Range
8
Interquartile Range of 1, 2, 3, 4, 5, 10, 11
30
Interquartile Range of 10, 20, 30, 40, 50, 60
16
Interquartile Range of 12, 14, 16, 20, 24, 30, 32, 40
75
Interquartile Range of 90, 100, 105, 110, 130, 175, 200
On average, how old are the dogs that live on this street?
Statistical the question is talking about more than one dog.
C. Q3 - Q1
The interquartile range is calculated by: A. Finding the middle number or median B. The maximum minus the minimum C. The upper quartile (Q3) minus the lower quartile (Q1) D. Finding the mean of the data
How many Presidents were inaugurated under 50?
Non-Statistical
How are these buttons distributed according to color?
Statistical
How many apps do my classmates have on their phone?
Statistical
How many boxes of Candy did each student sell?
Statistical
How much money did the different classes earn?
Statistical
What porporiton of the students at your school like watermelon?
Statistical because it is talking about more than one person.
What is a typical number of holes for the buttons in the jar?
Statistical because it is talking about multiple buttons.
Mean
The average of a set of numbers.
Lower Quartile
The beginning of the box
Upper quartile
The end of the box
Maximum
The highest point on a graph, upper extreme
B. 50%
The interquartile range of a box and whisker plot represents what percent of the data? A. 25% B. 50% C. 75% D. 100%
Minimum
The lowest point on a graph, lower extreme
Interquartile Range
The range of the box
A. 25%
The upper quartile of a box and whisker plot represents what percent of the data? A. 25% B. 50% C. 75% D. 100%
How much time do the members of my family spend eating per year?
This is a statistical question because the family members could eat at different timings and it may change from year to year.
How many times have I watched Star Wars?
This is not a statistical question because it is only asking about you and how many times you have watched Star Wars
79
What is the maximum
50
What is the median
20
What is the minimum
30
What is the value of Quartile 1
45
What is the value of Quartile 1
55
What is the value of Quartile 3
70
What is the value of quartile 3
75
What percentage of scores are above a 30
histogram
a graph that uses intervals to describe the categories, it is a frequency graph
Range
difference between lowest and highest values
Median
middle number in a set of data
Mode
the number that appears the most often in a list of numbers
