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January 25, 2015

Posted by **Anna** on Thursday, May 24, 2012 at 5:49am.

were 10 and 8 respectively. In which subject did Charlotte perform better? Explain your

decision.

- Maths B -
**PsyDAG**, Thursday, May 24, 2012 at 11:01amZ = (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

- Maths B -
**Anna**, Thursday, May 24, 2012 at 7:18pmi don't get what you mean. Can you please explain it to me again.

- Maths B -
**PsyDAG**, Friday, May 25, 2012 at 3:27pmThe 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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