Measure Center Variability

What is the range?

• 10

• 12

• 15

• 2 - 12

What is the Mode?
  22,7,22,1,7,18,18,16,6,6,7

• 7

• 18

• 21

• 6

The interquartile range (IQR) of a data set is the difference between the third and first quartiles. It represents the range of the middle half of the data.

• True

• False

Which is true?

• Mean < Median

• Mean = Median

• Mean > Median

Which measure of center should you use?

• mean

• median

Which is true?

• Mean < Median

• Mean = Median

• Mean > Median

Which measure of center should you use?

• mean

• median

Which measure of variability should you use?

• IQR

• standard deviation

Which is true?

• Mean < Median

• Mean = Median

• Mean > Median

Which measure of center should you use?

• mean

• median