Measures of Center

The school district compared how many swings each elementary school has. What is the mean of the numbers?

A reporter looked through her notebook to remember how many people she had interviewed in the past 5 days. What is the median of the numbers?

• 2

• 5

• 4

• 6

• 7

The town council reported on how many stop signs there are on each street. What is the mode of the numbers?

What is the median of the data set? $12,17,20,17,13,13$  

Which are the modes to the data set? $12,17,20,17,13,13$  

• 20

• 13

• 14

• 15

• 17

Look at the set of 5 numbers. How would the mode change if the number 91 replaced one of the 69's in the set? $91,\ 69,\ 69,\ 91,\ 91$  

• The mode would increase

• The mode would decrease

• There would be no change in the mode

A farmer wrote down how many kilograms of cherries were sold in the past 5 days. What is the range of the numbers?

The dot plot shows the numbers of books read by a group of students. Which statement is true?

• The graph is symmetrical

• The mean is 9

• The range and mean are the same

• The range is 10

Marcus gathered information on the heights of the students in his class. He put the data together in this histogram. Which of the following statements is true?

• Most of the students in Marcus's class are between 56 and 59 inches tall.

• There are more students that are 64-67 inches tall than 52-55 inches tall.

• There are more students in the 56-59 height range than in any other height range.

• There are 2 students with a height greater than 67 inches.

 $8,\ 3,\ 12,\ 3,\ 8,\ 4,\ 4,\ 8,\ 8,\ 10,\ 20$  
What is the mean of the data set?