Question 15
5 out of 5 points
To compare two scores that are measured on different scales, one needs to
transform the scores into:
Selected Answer:
z scores.
Answers:
standard deviations.
means.
z scores.
population parameters.

Question 16
0 out of 5 points
When calculating a z score for a distribution of means, the z score is referred to as a:

Question 17
5 out of 5 points
The second step in calculating a z score is expressing the obtained values in:

Question 18
5 out of 5 points
Adam scored 70 on his final exam. His class's average score was 50, with a standard
deviation of 10. How many standard deviations is Adam's score from the mean?

Question 19

5 out of 5 points
The formula for z based on the mean of a sample is:
Selected Answer:
z = (M –
M)/ M.
μ
Answers:
z = (M –
M)/ S.
μ
z = (X –
M)/ S.
μ
z = (X –
M)/ M.
μ
z = (M –
M)/ M.
μ
σ
μ
μ
σ
σ
Question 20

0 out of 5 points
A distribution of means would be more likely to have a(n) _____ compared to a
distribution of raw scores.

Question 1
5 out of 5 points
As sample size _____, the spread of distribution of means decreases.

Question 2
5 out of 5 points
If samples have at least _____ scores, the distribution of means will most likely
approximate a normal curve.

Question 3
5 out of 5 points

Repeated sampling of _____ approximates a normal curve, even when the underlying
population is skewed.
Selected Answer:
means
Answers:
means
standard deviations
scores
population parameters
Question 4

5 out of 5 points
Which of these z scores from a single distribution of scores corresponds to the raw
score farthest from the mean of the distribution?
1.2

Question 5
0 out of 5 points