Question 571:

Asked on January 10, 2009

Tags: Z-Score , Standard Score

1

Answer:

No answer provided yet.

We'll use the formula for a z-score by subtracting the data-point from the mean and dividing that result by the standard deviation = (5-3.5)/.5 = 1.5/.5 = 3

 

So billy has a standard score of 3. In other words, his score is 3 standard deviations above the mean score.