Measures of Center Spread

What percentage of the data is between 90 and 140?

• 25 %

• 50%

• 75%

• 100%

Given the data:

136, 150, 119, 150, 125, 140.

Find the upper quartile (Q3).

Mathematical Equivalence

ON

Which of the following best describes the shape of the distribution?

• skewed left

• skewed right

• uniform

• symmetrical

Find the range.
12, 5, 9, 18, 22, 25, 5

• 20

• 15

• 22

• 18

Which measure of center can be described as the average?

• Mean

• Median

• Mode

• Range

Which measure of center can be described as the middle?

• Mean

• Median

• Mode

• Range

Which measure of center can be described as the most common?

• Mean

• Median

• Mode

• Range

What is the median of the data set?
9, 7, 2, 4, 3, 5, 9, 6, 8, 0, 3, 8

• 6

• 7

• 5.5

• 9

What is the mean of the data set:
8.9, 9.4, 8.6, 9.1

• 8.5

• 8.9

• 9

• 9.1

At Donald's Donuts the number of donut holes in a bag can vary. Help Donald find the mode.
12,10,10,10,13,12,11,13,10

• 13

• 12

• 11

• 10