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Use mean and standard deviation to fit a data set to a normal distribution when appropriate; estimate population percentages using tools

Use the mean and standard deviation of a data set to fit it to a normal distribution and to estimate population percentages. Recognize that there are data sets for which such a procedure is not appropriate. Use calculators, spreadsheets, and tables to estimate areas under the normal curve.


  • Find population percentages using z-scores and tables

    In this lesson you will learn how to find what percentage of a population falls within a certain interval by using z-scores and tables.