Mean and Outlier

Gabriella’s quiz grades are shown below.
88, 92, 92, 96, 98
Gabriella scored a 20 on her sixth quiz. What effect does this score have?

• The low score causes the median to increase.

• The low score causes the median to decrease.

• The low score causes the mean to increase.

• The low score causes the mean to decrease.

A value that is much higher or much lower than the other values in a set of data.

• Outlier

• Mean

• Median

• Mode

Identify the outlier for the given data?

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

• 7

• 23

• 31

• 34

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

• 90

• 0

• 80

• 100

A bowler had the following scores after 5 games:
 196, 205, 197, 280, and 202.
How much does the bowler’s mean score increase if the outlier is considered, compared to if the outlier is not considered?

• 13

• 16

• 19

• 22

Given the following data set
6, 9, 12, 14, 7, 9, 6, 8, 25, 12, 14
What is the mean of the data set without the outlier(s)?

• 9.2

• 9.7

• 11.1

• 12.4

12,14,11,12,18,15,9, 32
What is the Mean with the outlier?

• 12

• 13

• 15.4

• 9

Which of the following is an outlier in the data set 3, 4, 5, 6, 22?

• 3

• 4

• 6

• 22

Select all that apply to this data set.

• The outlier is 0

• The mode is 4

• The median is 4

• The mean is 3

Which scenario is most likely to have outliers?

• Ages in a senior citizen community

• Heights of adult males

• Test scores where most are 90% but a few below 50%

• Number of pages in novels