Posted by Anna on Thursday, May 24, 2012 at 5:49am.
Z = (score-mean)/SD
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions related to the Z scores. Change to percentiles and compare.
Percentile = precent ≤ a score
i don't get what you mean. Can you please explain it to me again.
The Z score is the score in terms of standard deviations.
Percentile indicates proportion of scores that are equal to or below a particular score.
Consulting the previously named table should be able to give the percentile for each score for comparison.
If you still don't understand, you need to start a new post indicating the specific problem you are having.
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