Z Score and Percentile

Z Score and Percentile

Assessment

Assessment

Created by

Paige Wood

Mathematics

9th - 12th Grade

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10 questions

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1.

Multiple Choice

5 mins

1 pt

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

2.

Multiple Choice

5 mins

1 pt

Find the Z-score.

Mean = 22

Standard Deviation: 3.1

x = 29

2.26

16.45

-2.26

1.26

3.

Multiple Choice

5 mins

1 pt

Find the mean.

Z-score = -1.4

Standard Deviation: 7

x = 20

29.8

10.2

-21

35

4.

Multiple Choice

1 min

1 pt

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

5.

Multiple Choice

30 sec

1 pt

The 75th percentile is also know as the

median

third quartile

1st quartile`

interquartile range

6.

Multiple Choice

30 sec

1 pt

If I tell you that you scored at the 55th percentile on your final exam, you would know:

55% of the class scored the same or worse than you did

You earned a 55% on the exam

You failed the exam

45% of the class scored worse than you did

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