Question 37:

Asked on October 29, 2007

Tags: Z-Score , Standard Deviation

1

Answer:

No answer provided yet.

The mean of your dataset is 12.83, the standard deviation is 8.88. To calculate the z-score, subtract the score of interest from the mean and divide the result by the standard deviation = (10-12.83)/8.88 = -0.318693694 . 10 has a z-score of about -.32. Since the z-score is negative, it means the score of 10 is less than the average (which it is since we calculated the mean as 12.83).  See the article: How do you calculate a z-score.