Standard Deviation and Mean

Given the data set:

21, 14, 13, 16, 16, 15, 13, 10, 13, 18, 12, 14

Calculate the mean.

• 13

• 14

• 14.5

• 14.6

Given the data set:

21, 14, 13, 16, 16, 15, 13, 10, 13, 18, 12, 14

Calculate the mode.

• 13

• 14

• 14.5

• 14.6

Given the data set:

21, 14, 13, 16, 16, 15, 13, 10, 13, 18, 12, 14

Calculate the median.

• 13

• 14

• 14.5

• 14.6

Given the data set:

21, 14, 13, 16, 16, 15, 13, 10, 13, 18, 12, 14

Calculate the range.

• 3

• 4

• 11

• 12

Given the data set:

21, 14, 13, 16, 16, 15, 13, 10, 13, 18, 12, 14

Calculate quartile 1.

• 12

• 13

• 15

• 16

Given the data set:

21, 14, 13, 16, 16, 15, 13, 10, 13, 18, 12, 14

Calculate quartile 3.

• 12

• 13

• 15

• 16

Given the data set:

21, 14, 13, 16, 16, 15, 13, 10, 13, 18, 12, 14

Calculate the interquartile range.

• 3

• 4

• 5

• 8

Given the data set:

21, 14, 13, 16, 16, 15, 13, 10, 13, 18, 12, 14

Calculate the standard deviation.

• 2.8

• 3

• 4.8

• 2

For which set of scores is the mean the same as the median?

• 2, 2, 3, 3, 4

• 1, 2, 3, 4, 5, 6, 7

• 3, 4, 4, 4, 5

• 1, 2, 5, 6, 6

Which of these is a measure of spread?

• Interquartile range

• Median

• Mean

• Mode