Measure of Variation

Measure of Variation

6th Grade Math

Measure of Variation

• is a measure that describes the distribution of a data set

Range

• The range of a data set is the difference of the greatest value and the least value

• To find the least and the greatest values, order the scores from least to greatest. 

• Subtract the least value from the greatest vaule

Multiple Choice

Find the range of the following data.

43, 51, 45, 46, 67, 33

• 46

• 34

• 47

• 35

Multiple Choice

Find the range of the following data;

18, 30, 8, 21, 23, 17, 24, 35, 19

• 21

• 23

• 24

• 27

Multiple Choice

Find the range of the following data;

153, 131, 145, 136, 117, 143

• 36

• 35

• 33

• 30

Multiple Choice

Find the range of the following data;

4.1, 10.2, 3.6, 5.9, 6.3, 7.5, 9.2, 3.1

• 5.9

• 7.1

• 3.6

• 7.5

Quartiles

The quartiles of a data set divide the data into four equal parts. Recall that the median (second quartile) divides the data set into two halves

Multiple Choice

Find the interquartile range of the data.

22, 43, 62, 56, 37, 44, 39, 57, 61

• 15

• 18

• 21

• 24

Multiple Choice

Find the interquartile range of the data.

144, 128, 147, 158, 134, 156, 151, 162, 155

• 15

• 18

• 21

Multiple Choice

Find the interquartile range of the data.

103, 83, 112, 81, 57, 104, 89, 90

• 12

• 15

• 18

• 21.5

Multiple Choice

Find the range of the following data;

18, 30, 8, 21, 23, 17, 24, 35, 19

• 21

• 23

• 24

• 27