Finding Percentages in a Normal Distribution Using Z Scores and Tables

This lesson teaches how to find the percentage of a population within a certain interval using Z-scores and statistics tables. It begins with a review of the empirical rule and its limitations, then introduces Z-scores as a method to measure how far a value is from the mean. The lesson explains how to use Z-scores with statistics tables to find areas under the normal curve, converting these areas into percentages. Examples are provided to illustrate the process, including calculating the percentage of IQ scores between specific values.

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