Measures of Center and Variability Used When Comparing Data

Which measure of variability should you use?

• IQR

• standard deviation

It's the number you get when you add all the numbers together and then divide by the amount of numbers you have.

• mean

• median

• mode

• range

It's the middle number in a set of data.

• mean

• median

• mode

• range

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

What is the median of the following set of data?

• 25

• 23

• 14

• 21

What is the mode of the following set of data?

14, 21, 23, 25, 25

• 23

• 21

• 14

• 25

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

• mean

• median

Is there an outlier in the following set of data?

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

• yes

• no