Data are collected about the amount of time, in minutes, each member of the lacrosse team spends practicing. How does a single outlier change the mean of the collected data?

A single outlier causes the value of the mean to move slightly toward the outlier.
A single outlier causes the value of the mean to move slightly away from the outlier.
A single outlier does not affect the value of the mean.
A single outlier doubles the value of the mean.

The data set shows the number of homework assignments required in math classes for a month:


22

23

23

21

18

4

17

15

23

20

24

15

25

16



Which of the following statements is true based on the data set?
There is one outlier that indicates an unusually large number of assignments required in that class.
There is one outlier that indicates an unusually small number of assignments required in that class.
There are two outliers that indicate an unusually large number of assignments required in those two classes.
There are two outliers that indicate an unusually small number of assignments required in those two classes.