Statistics Unit Review

Which of the following is the BEST description of the data?

• The mean is about 29.1, there is a peak at 30, gaps at 28 and 32, data is not symmetrical

• The median is 29, there is a cluster from 26 – 31, peak at 29, no outlier

• The mode is 29, there is a gap from 28 – 31, peak at 29, no outlier

• The range is 7, there is a peak at 29, cluster from 29 – 31, gaps at 28 and 32

Students will receive treats for scores at or above the upper quartile. What is the lowest score a student can get and still receive an award?

• 85

• 80

• 98

• 93

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The team size for seven football teams is shown. Which team size affects the range of all 7 classes the most?

• 38

• 25

• 8

• 30

What is the mode of the data set 2, 3, 4, 4, 5, 6, 6, 6, 7?

• 4

• 5

• 6

• 7

What is a requirement of a statistical question?

(a)  

• a variety of answers

• one set answer

Find the mean of the following numbers: 5, 10, 15, 20, 25.

• 15

• 20

• 10

• 25

Which of the following are statistical questions?

• yes

• How many pizza toppings do students like on their pizza?

• no

• Ho many students are in sixth grade in my school?

• no

• who is the principal of Magnolia Middle school?

• no

• How may text messages does a sixth-grade student send each day?

• no

• what is the favorite pizza topping of students in my class?

Find the median of the following set of numbers: 12, 7, 9, 13, 8.

• 9

• 10

• 8

• 12