Quartiles and Box Plots Concepts

What are the five key data points needed to create a box and whisker plot?

• Mean, Median, Mode, Range, Outliers

• Minimum, Maximum, Q1, Q2, Q3

• Average, Smallest, Largest, Middle, Spread

• First, Second, Third, Fourth, Fifth

What is the first step to find the quartiles of a data set?

• Find the average of all numbers.

• Arrange the numbers from smallest to largest.

• Count how many numbers are in the list.

• Draw a number line.

What is the median (Q2) of the data set: 8, 10, 11, 13, 14, 17, 20, 22, 24, 27, 29, 35, 49?

• 17

• 22

• 20

• 24

What is the first quartile (Q1) of the data set?

• 11

• 12

• 13

• 14

What is the interquartile range (IQR) for the given data set?

• 12

• 16

• 20

• 28

What does the line inside the box of a box and whisker plot represent?

• Minimum

• Maximum

• Median

• First Quartile

What is the smallest number in the following list: 18, 34, 76, 29, 15, 41, 46, 25, 54, 38, 20, 32, 43, 22?

• 18

• 15

• 20

• 22

For the ordered list of numbers (15, 18, 20, 22, 25, 29, 32, 34, 38, 41, 43, 46, 54, 76), what is the median (Q2)?

• 32

• 33

• 34

• 29

If the first quartile (Q1) is 22 and the third quartile (Q3) is 43, what is the Interquartile Range (IQR)?

• 21

• 65

• 11

• 33

In a data set, if the range for non-outliers is from -9.5 to 74.5, which of the following numbers is an outlier?

• 15

• 54

• 76

• 22