Measures of Center Box Plot

What is the median of the data?

• 10

• 12

• 13

• 14

• 18

What percent of the data falls between 8 and 10 absences?

• 0%

• 25%

• 50%

• 75%

• 100%

Here is Wanda's set of numbers again: 14, 15, 16, 19, 21, 25, 28, 30, 30, 31, 34, 40, 42, 45, 45, 50 What is Q1 (first quartile) for this data set?

• 14

• 19 or 21

• 20

• 36

Here is Wally's set of numbers again: 54, 60, 62, 62, 65, 67, 70, 71, 71, 72, 75, 75, 75, 77, 79 What is Q1 (quartile 1) for Wally's set?

• There is no Q1.

• 54

• 62

• 75

Which car club has the higher median?

• Cruisers

• Car Hops

Label the parts of this Box Plot.

a

b

c

d

e

Q1

Q3

Min

Median

Max

What is the interquartile range of plot A?

• 6

• 8

• 15

• 28

What is Q3 (quartile 3)?

• 75

• 79

• 54

• 62

What is the Interquartile Range (IQR)?

• 54

• 79

• 13

• 25

What do you do if there are two numbers in "the middle" when you are finding the median?

• Pick your favorite number

• Add the two numbers in the middle & then divide by two.

• They are both the median

• None of the above