Statistics Outliers

A data set contains only one outlier. Which statistical measure will most likely remain the same if the outlier is removed?

• Mean

• Mode

• Range

• Standard deviation

The table below shows the lengths of fences a company installed during a week. 
Which statement is true?

• The 275-foot fence caused the mean to be significantly lower than the median.

• The 275-foot fence caused the median to be significantly lower than the mean.

• The 2,250-foot fence caused the mean to be significantly greater than the median.

• The 2,250-foot fence caused the median to be significantly greater than the mean.

Your math grades are 90, 85, 0, 90, 80, 100, and 90. Which grade is the outlier?

• 90

• 0

• 80

• 100

Given the following data set What is the mean of the data set without the outlier(s)?

• 9.2

• 9.7

• 11.1

• 12.4

Identify the outlier for the given data?

23, 34, 27, 7, 30, 26, 28, 31, 34

• 7

• 23

• 31

• 34

Identify the outlier for the given data?

23, 34, 27, 7, 30, 26, 28, 31, 34

• 7

• 23

• 31

• 34

Which of the following numbers is the outlier?

34, 75, 82, 95, 100, 100

• 75

• 34

• 95

• 100

The data set below has an outlier of 42. 2, 5, 12, 15, 19, 4, 6, 11, 16, 18, 12, 12, 42 What effect does removing the outlier have on the measures of center?

• The median will decrease

• The mean will decrease

• The mean will increase

• The median will increase

A bowler had the following scores: 196, 205, 197, 280 and 202. What is the difference between the mean with the outlier and the mean without the outlier?

• 13

• 16

• 19

• 22

The table shows the lengths of fences that a company installed during a week. Which statement is true?

• The 275-foot fence caused the mean to be significantly lower than the median.

• The 275-foot fence caused the median to be significantly lower than the mean.

• The 2,250-foot fence caused the mean to be significantly greater than the median.

• The 2,250-foot fence caused the median to be significantly greater than the mean.