The Normal Distribution

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Presentation transcript:

The Normal Distribution 12.4 Notes The Normal Distribution

Normal Distribution

Normal Distribution Bell shaped curve, symmetric Mean, median, mode are all equal located at the center. Data items cluster around the mean Used to make predictions about an entire population

Standard Deviations

Finding Scores at Specified S.D.

Computing z-scores A z-score describes how many standard deviations a data item in a normal distribution lies above or below the mean. The z-score can be obtained using

Sketch a Distribution Normal Distribution of Weights of Newborn Infants

Using and Interpreting z-scores

Understanding z-scores

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