Z Scores Flashcards
1
Q
What does a Z Score tell us
A
How many standard deviations a score is away from (above or below) the mean of the distribution
2
Q
How do u calculate a z score from a raw score
A
- subtract mean from raw score
- divide score by sd
3
Q
What does a score between a mean of 0 and 1sd mean
A
Average
4
Q
What does a score between 1sd and 2sd mean
A
Borderline
5
Q
What does a score +- 2 mean
A
Unusual
6
Q
How to calculate a raw score from a z score
A
- times z and sd
- add the mean
7
Q
In Z Scores what is the mean ALWAYS equal to
A
0
8
Q
In Z Scores what is the sd ALWAYS equal to
A
1
9
Q
What is a Z Score
A
A raw score expressed in standard deviation units
10
Q
A z score is the ratio of…
A
A deviation score to the standard deviation
11
Q
If a score is significant, is it likely to be due to chance
A
No
