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Posted by on Saturday, October 15, 2011 at 12:23pm.

A Math test has a mean of 51 and standard deviation of 5.0. Find the corresponding z scores for:

I. a test score of 64
II. a test score of 47

  • Stats - , Saturday, October 15, 2011 at 12:54pm

    Z = (score-mean)/SD

    Insert the values and calculate.

  • Stats - , Saturday, October 15, 2011 at 3:06pm

    Z = 64-51/5.0 = 13/5.0 = 2.6
    Z = 47-51/5.0 = -4/5.0 = -0.8

    Is this correct?

  • Stats - , Sunday, October 16, 2011 at 11:18pm

    You got it!

  • Stats - , Sunday, October 16, 2011 at 11:54pm

    yay!! thank u!!

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