# Calculate: z-Scores

September 29, 2008 by kltangen

Filed under How To Calculate, z-scores

A z-score tells you how many standard deviations your score is away from the mean. If z is positive, your score is above the mean. If z is negative, your score is below the mean. If your score is at the mean, z = 0.

Take your score (X) and subtract the mean from it. X with a bar over it is the symbol for the mean, and it’s pronounced bar-x (like the ranch on an old cowboy movie).

Divide the result of your subtraction by the standard deviation.

Takes it. It’s easier than mixing muffins, and there’s no preheating the oven. ðŸ™‚

NOWÂ YOU CHOOSE:

Day 4: z-Score

A Bit More About z-Scores

Even More About z-Scores

How To Calculate z-Scores

Practice Problems

Basic Facts About z-Scores

Vocabulary

Formulas For z-Scores

Quiz 4

Summary

Day 4: z-Score

A Bit More About z-Scores

Even More About z-Scores

How To Calculate z-Scores

Practice Problems

Basic Facts About z-Scores

Vocabulary

Formulas For z-Scores

Quiz 4

Summary