Day 4: z-Score
October 16, 2008 by
Filed under 10-Day Tour
An entire distribution can often be reduced to a mean and standard deviation. A z-score uses that information to indicate the location of an individual score. Essentially, z-scores indicate how many standard deviations you are away from the mean. If z = 0, you’re at the mean. If z is positive, you’re above the mean; if negative, you’re below the mean. In practical terms, z scores can range from -3 to +3.
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
Audio: Lectures
Vocabulary
Formulas For z-Scores
Quiz 4
Summary




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