Histograms are graphs that provide a large amount of useful information for all types of data and display the frequency of observations in a data set. The purpose of this note is to introduce histograms for several types of data, provide examples of insights that can be gained and calculations that can be performed using histograms, and demonstrate how to build histograms in Microsoft Excel. In addition, this note reviews the Normal distribution, which can be used to approximate many empirical distributions. The note includes practice exercises and their solutions, and a supporting Excel workbook for students.
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