Homework Help: statistics

Posted by niki on Tuesday, September 27, 2011 at 7:24am.

1. On final examination in Business Law, the mean was 68 and the standard deviation was 12. Determine the standard scores of students receiving marks of 50?

statistics - Shineylou, Tuesday, September 27, 2011 at 8:08am
Are you looking for the z score?
If so,
x-x bar (mean)/sd
50-68 / 12
-1.5

This particular datum is 1.5 sd's below the mean.
statistics - niki, Tuesday, September 27, 2011 at 10:51am
Yes i'm looking for the z score.
Thank you so much.

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