Mean Median Mode and Quartiles

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

Interquartile Range is

• the difference between the third quartile and the first quartile

• the difference between the greatest and least data values.

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 Range of this data set?

• 13

• 37

• 72

What data value is the upper quartile (Q3)?

• 64

• 62

• 66

• 58

What value is the lower quartile?

• 66

• 58

• 60

• 64

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

What is the term for the median of the upper half of the data?

• Upper Quartile

• Lower Quartile

• Median

• Minimum

What is the upper quartile of the set of data; 2, 4, 6, 6, 7, 8, 10

• 4

• 6

• 8

• 2