Stats Z-score

Find the Z-score.

Mean = 22

Standard Deviation: 3.1

x = 29

• 2.26

• 16.45

• -2.26

• 1.26

Tags

CCSS.HSS.ID.A.4

Find the Z-score.

Mean = 21

Standard Deviation: 1.3

x = 22

• 0.77

• 5.33

• 1.07

• 1.26

Tags

CCSS.HSS.ID.A.4

Find the mean

Z-score = -0.4

Standard Deviation: 7

x = 20

• 22.8

• 17.2

• 22.04

• 32.5

Tags

CCSS.HSS.ID.A.4

CCSS.HSS.MD.A.2

Find the value of x.

Z-score = -2.2

mean = 25

Standard Deviation: 7

• 9.6

• -36

• 5.2

• 23.46

Tags

CCSS.HSA.CED.A.4

CCSS.HSA.REI.B.3

CCSS.HSS.ID.A.4

Find the mean.

Z-score = -1.25

Standard Deviation: 4

x = 11

• 16

• 6

• 18

• 21

Tags

CCSS.HSS.ID.A.4

CCSS.HSS.MD.A.2

CCSS.HSS.MD.A.3

Find the mean.

Z-score = -1.4

Standard Deviation: 7

x = 20

• 29.8

• 10.2

• -21

• 35

Tags

CCSS.HSS.ID.A.4

The sign of the z-score indicates whether the location is above(positive) or below(negative) the mean.

• True

• False

Tags

CCSS.HSS.ID.A.4

Find the z-score value corresponding if the location is below the mean by 2 standard deviations

• +2.00

• -2.00

• +1.25

• -1.00

Tags

CCSS.HSS.ID.A.4

z-scores is the standardized scores for X values

• True

• False

Tags

CCSS.HSS.ID.A.4

If heights of 3rd graders follow a normal distribution with a mean of 52 inches and a standard deviation of 2.5 inches, what is the z score of a 3rd grader who is 47 inches tall? 

• -5
• -2
• 2
• 5

Tags

CCSS.HSS.ID.A.4