Statistics - Measures of dispersion

If the variance of a data set is 30.25, what is the standard deviation?

• 5.5
• 15.125
• 60.5
• 915.0625

Find the standard deviation for the following data; 86, 95, 78, 67, and 85.

• 82.2

• 5

• 9.33

• 10.43

Tags

CCSS.HSS.ID.A.2

The heights of some students are given.

158cm 172cm 164cm

164cm 167cm 159cm

What is the range of the heights?

• 13cm

• 14cm

• 164cm

• 330cm

Tags

CCSS.6.NS.C.7

CCSS.6.SP.A.1

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.5

All of the below sets have the same mean.
Set 1-Standard Deviation=3.1
Set 2-Standard Deviation=4.9
Set 3-Standard Deviation=1.7
Set 4-Standard Deviation=3.2
Which set of data probably has the points closest to the mean?

• 1
• 2
• 3
• 4

Tags

CCSS.HSS.ID.A.2

CCSS.HSS.ID.A.3

A(n) ____ of a data set is much greater or much less than the other data values.

• mean

• median

• mode

• outlier

Tags

CCSS.HSS.ID.A.3

What is the median on this box pot?

• 52

• 54

• 56

• 63

Tags

CCSS.HSS.ID.A.1

CCSS.HSS.ID.A.2

Find the lower quartile of the following set of scores.

12, 9, 4, 6, 5, 8, 9, 4, 10, 2

• 10

• 4

• 9

• 6

Tags

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.5

Find the interquartile range of the data:

20, 22, 25, 29, 31

• 30

• 21

• 25

• 9

Tags

CCSS.HSS.ID.A.2

CCSS.HSS.ID.A.3