Practice Problems: z-Score

Item 1

Calculate the z-score, assuming:

X = 10
mean = 50
stdev = 10

 

X – mean _____
z score _____

 

Item 2

Calculate the z-score, assuming:

X = 80
mean = 50
stdev = 15

 

X – mean _____
z score _____

 

Item 3

Calculate the z-score, assuming:

X = 112
mean = 100
stdev = 15

 

X – mean _____
z score _____

 

Item 4

Calculate the raw score, assuming:

z = 1.5
mean = 115
stdev = 10

 

z * stdev _____
X _____

 

Item 5

Calculate the raw score, assuming:

z = -1.37
mean = 100
stdev = 20

 

z * stdev _____
X _____

 

Item 6

Calculate the raw score, assuming:

z = -1.37
mean = 100
stdev = 20

 

X _____

 

Answers

NOW YOU CHOOSE:
Day 4: z-Score
A Bit More About z-Scores
Even More About z-Scores
How To Calculate z-Scores
Practice Problems
Basic Facts About z-Scores
Vocabulary
Formulas For z-Scores
Quiz 4
Summary