Interpret Measures of Center Variability

What is the range?

• 27

• 12

• 25

• 13 - 40

What is the first quartile?

• 20

• 26

• 32

• 13

What is the interquartile range?

• 12

• 27

• 15

• 18

What is the range?

• 60

• 22.5

• 67

• 35

What is the first quartile?

• 48.5

• 67

• 45

• 52

What is the third quartile?

• 71

• 70

• 72

• 67

What percent of the data is between 20 and 32?

• 50%

• 25%

• 75%

• 100%

Find the median for the following prices;

$12.50, $15.50, $15, $17.50, $11.50

• $12.50

• $15

• $17.50

• $11.50

Find the lower quartile (Q1) of the following set of scores 6, 7, 8, 9, 11, 13, 15

• 13

• 9

• 7

• 6

Find the IQR (Q3 - Q1) of the data

20, 22, 25, 29, 31

• 30

• 25

• 21

• 9