A z-score of −2.0 is reported for a student's reading score.
What does this z-score mean?
- A
The score equals −2
- B
The score is 2 SDs above the mean
- C
The score is in the bottom 2%
- Dcheck_circle
The score is 2 SDs below the mean
Explanation
A z-score of −2 means the value is 2 standard deviations below the mean.