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How Do I Create Histograms with Descriptive Statistics?

Multiple Histograms

  1. Click Sheet 1 Tab of Customer Data.xls (or press F4 to activate last worksheet).
  1. Click SigmaXL > Graphical Tools > Histograms & Descriptive Statistics
  1. Ensure that entire data table is selected. If not, check Use Entire Data Table. Click Next.
  1. Select Overall Satisfaction, click Numeric Data Variables (Y) >>, select Customer Type, click Group Category (X1) >> as shown:

    Create Histograms in Excel with SigmaXL

  1. Click OK. Multiple Histograms and Descriptive Statistics of Customer Satisfaction By Customer Type are produced:

Create Multiple Histograms in Excel with SigmaXL

Clearly Customer Type 2 shows a higher level of overall satisfaction, with the data skewed left. Note that Customer Type 1 and 3 have data that is normally distributed, but this is not desirable when the response is a satisfaction score!

  1. Note that bin one is 1.72 to < 1.99, bin 2 is 1.99 to < 2.26, etc. The number of decimals displayed can be changed by double-clicking on the X axis, click Number tab, and adjust decimal places.

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