1
Q
What does a z-score of zero indicate
A
X value is the mean
2
Q
Are z-scores descriptive or inferential
A
Both
3
Q
What is the advantage of using z-scores to compare populations
A
Can compare distributions with different scales
4
Q
How is a z score calculated for a given value of X if also given values for μ and σ
A
Subtract μ and then divide by σ
5
Q
How is the X value calculated for a given z-score if also given the values for μ and σ
A
Mutiply z-score by σ and add result to μ
6
Q
How are z-scores related to the standard deviation of a dataset
A
Z-score indicates how many standard deviations away a value is from the mean
