Box Plots and Measures of Variation

What does point C on the box plot represent?

• First Quartile

• Median

• Third Quartile

• Mean

What do points B and D represent on the box plot?

• Mean and Mode

• Mean and Median

• Least and Greatest Value

• First and Third Quartiles

What do points A and E represent on the box plot?

• Mean and Mode

• Mean and Median

• Least and Greatest Value

• First and Third Quartiles

What is the median of this data set?

• 8

• 12

• 15

• 19

What is the least and greatest value of this data set?

• 6 and 8

• 6 and 19

• 8 and 15

• 15 and 19

What is the range of this data set?

• 6

• 12

• 13

• 19

Data points in the first quartile are between which two points?

• 6 and 8

• 8 and 12

• 12 and 15

• 15 and 19

What is the Interquartile Range of this data set? The lower (first) quartile is 19 and the upper (3rd) quartile is 56.

• 75

• 37

• 72

What is the Range of this data set?

• 13

• 37

• 72

Interquartile Range is

• the difference between the third quartile and the first quartile

• the difference between the greatest and least data values.