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

    Formulas For z-Scores
    Quiz 4



2 Responses to “Day 4: z-Score”

  1. Statistics For Psychology : on June 27th, 2009 1:49 am

    […] See Day 2: Central Tendency           See Day 3: Dispersion           See Day 4: z scores     Chapter 3: Some Key Ingredients for Inferential Statistics     Chapter 4: Introduction to […]

  2. Gravetter & Wallnua : on June 27th, 2009 2:41 am

    […]      Chapter 5: z-Scores: Location of Scores and Standard Distributions           See Day 4: z scores      Chapter 6: Probability           See Day 7: Probability      Chapter 7: […]

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