Lessons

Find population percentages using zscores and tables
In this lesson you will learn how to find what percentage of a population falls within a certain interval by using zscores and tables.
Resources
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.
In this lesson you will learn how to find what percentage of a population falls within a certain interval by using zscores and tables.