Visualization methods enhance our understanding of sample data and help us make comparisons across samples. Box plots are a simple but powerful graphing tool that can be used in place of histograms to ...

Microsoft Excel, a spreadsheet and data analysis program, is available as a stand-alone program or as a component of the Microsoft Office productivity suite. Excel 2007 included a number of new ...

When data is presented as a list of numbers, it can be difficult to interpret. If it is summarised in a diagram it is easier to draw conclusions and to compare with a different data set. A box plot is ...

This example uses the flight delay data of the preceding example to illustrate how you can create box charts with various styles of box-and-whisker plots. For simplicity, the control limits are ...

The following statements use the flight delay data of Example 32.1 to illustrate how to create side-by-side box-and-whisker plots with notches: title 'Analysis of Airline Departure Delays'; symbol ...