Unit 6B Measures of Center and Spread

What is the mean of the data set?

{32, 33, 34, 34, 35, 38, 38, 38, 49, 42}

• 10

• 36.5

• 37

What is the median of the data set?

{ 21, 23, 25, 26, 28, 28, 28, 31, 33}

• 28

• 56

• 26

What is the IQR (interquartile range) of the graph?

• 16

• 32

• 20

What is the IQR of the data set?

{42, 42, 45, 45, 48, 50, 50, 55, 60, 65, 80}

• 15

• 50

• 10

The graph shows the data from an experiment. The distribution of the data is what?

• normal

• skewed to the right

• skewed to the left

The graph represents the rainfall in a city. The distribution of the data is what?

• Skewed to the right

• Uniform

• Normal

Which is the best measure of center for the graph?

• Mean and median

• Mean only

• Median only

Which is the best measure of center for the graph?

• Mean and Median

• Mean only

• Median only

What is the best measure of center for the dot plot?

• Mean and Median

• Mean only

• Median only

Complete the sentence.

A measure of center summarizes all of the values in a data set with a/an _____________ number.

• average

• single

• range