Measures of Variability

Find the range of the below set of data:

3, 5, 6, 9, 11, 13, 19, 20

• 20

• 19

• 17

• 13

Below are the height of 8 grade 7 students. Find the range.

145 cm, 148 cm, 151 cm, 153 cm, 155 cm, 155 cm, 156 cm, 160 cm

• 15 cm

• 18 cm

• 20 cm

• 25 cm

Find the range of the weights of the 10 teachers in TAPS Santiago.

56 kg, 52 kg, 72 kg, 62 kg, 70 kg, 50 kg, 46 kg, 47 kg, 54 kg, 48 kg

• 16

• 24

• 25

• 26

It is the distance of a data value from the mean.

• range

• deviation

• average deviation

• variance

It is the difference between the smallest value and the largest value.

• range

• average deviation

• variance

• standard deviation

It is the defined as the average of the squared deviations of the data.

• range

• average deviation

• variance

• standard deviation

It is the defined as the positive square root of the variance.

• range

• average deviation

• variance

• standard deviation

It is the mean of the deviations of a set of data from the data's mean.

• range

• average deviation

• variance

• standard deviation

Find the average deviation of the set of data:
5, 8, 9, 11, 12, 15

• 16

• 10

• 6.83

• 2.67

Find the average deviation of the set of data:
15, 16, 16, 18, 19, 20, 20, 20

• 1.75

• 2.25

• 3.33

• 4.33