Determine and Interpret Appropriate Measure of Center and Variability

It is a measure of variability that you get when you subtract the smallest number in a set of data from the largest number.

• mean

• median

• mode

• range

Which measure of center should you use if there is an outlier in your data?

• mean

• median

Which measure of center should you use if there are no outliers?

• mean

• median

What is the median of the following set of data?

• 25

• 23

• 14

• 21

What is the mode of the following set of data?

• 23

• 21

• 14

• 25

Is there an outlier in the following set of data?

• yes

• no

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

Find the mode:
5, 0, 9, 9, 3, 0, 5, 5, 4

• 9

• 5

• 3

• 7

Find the median:
5, 6, 3, 9, 0, 4, 1, 2, 7

• 4

• 4.1

• 5

• 4.5

Which measure of center best represents this set of data?
12, 13, 11, 16, 31, 14, 10, 15

• Mean

• median

• mode