Measures of Center/Variability

It's the number that occurs the most times in a set of data.

• mean

• median

• mode

• range

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

Which measure of center should you use for the following data distribution?

• mean

• median

Is there an outlier in the following set of data?

8, 45, 45, 47, 48, 48, 49, 50

• yes

• no

Ten student's in Ruth's class were asked how many text messages they sent yesterday. Their answers were:

1, 0, 10, 7, 12, 2, 9, 15, 1, 3

What is the MEAN number of texts?

• 6

• 5

• 1

• 15

Ten student's in Ruth's class were asked how many text messages they sent yesterday. Their answers were: What is the MEDIAN number of texts?

• 6

• 5

• 3

• 12