Mean and Outlier

Another name for the "mean"

• Middle number

• Average

• Number that repeats the most

• Rude

8.9, 9.4, 8.6, 9.1

• 8.5

• 8.9

• 9

• 9.1

Find the mean of the data set:
34, 57, 58, 56, 21

• 45.2

• 56

• none

• 48

Find the mean of this set of numbers:
19, 19, 9, 11, 13, 20, 19, 10

• 19

• 15

• 20

• 13

Find the mean of the data set.

8, 12, 16, 10, 8, 6

• 60

• 10

• 6

• 14

Find the outlier of the data set.

15, 20, 18, 35, 17, 35, 13

• no outlier

• 35

• 13

• 15

Find the mean of the data set.

31, 20, 51, 31, 27

• 31

• 51

• 27

• 30

A(n) ____ of a data set is much greater or much less than the other data values.

• mean

• median

• mode

• outlier

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 distribution of the data?

• The mean will decrease

• The median will decrease

• The mean will increase

• The median will increase

Use the interquartile range to identify any outliers in the following data.

52, 63, 55, 56, 62, 54, 59, 60, 53, 61, 88

• No outliers.

• 88 is an outlier.