Homework Help: Statistics- Math

Posted by Kerrin on Friday, February 17, 2012 at 12:00pm.

One student scored 54 on a math test for which the mean score was 50.5 and the standard deviation was 3.2. Another student scored 80 on a chemistry test for which the mean score was 75.2 and the standard deviation was 5.2. Which student (math or chemistry) had a "better" score relatived to the rest of the test-takers?

Statistics- Math - MathGuru, Friday, February 17, 2012 at 6:19pm
Find both z-scores.

Formula:
z = (x - mean)/sd

Once you have both z-scores, compare the scores.

I hope this will help get you started.

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