Measures of Center

Find the mean.
90, 100, 95, 85, 60, 80

• 85

• 84

• 86

• 90

Find the median.
12, 5, 9, 18, 22, 25, 5

• 9

• 8

• 12

• 18

Find the median number of fires Jack started in the last 8 days.

22, 53, 25, 27, 16, 65, 42, 70

• 34.5

• 42

• 27

• 40.5

What is the Peak of this data?

• 90

• 85, 90, and 95

• 85 and 95

• None

The box plot shows the test scores in Mr. Jordan's class. The appropriate measure of center is the ​ ​ ​ (a)  

• Median

• Mode

• Mean

• Range

• IQR

The tennis team needs to raise money by selling raffle tickets. The box plots show how many tickets were sold over 15 days by 3 students. What is the appropriate measure of center for Daniel?​ (a)  

• Median

• Mean

• Range

• IQR

Annabel is comparing the distances that two electric cars can travel after the battery is fully charged. Use the measures of center to make an inference about the data. Use the drop-down menus to complete your answer. ​ (a)   can travel further than ​ (b)   after the battery is fully charged.

• Car B

• Car A

The data shows the number of goals Dash has scored. Find the mode(s).

4, 4, 2, 3, 1, 0, 7, 2, 5, 6

• 4

• 2, 4, and 6

• 6

• 4 and 2

Ervin bowled 7 games last weekend. His scores are: 155, 165, 138, 172, 127, 193, 142. What is the range of Ervin's scores?

• 193

• 127

• 60

• 66

find the lower quartile (Q1) of the following set of scores

• 10

• 4

• 9

• 6