Comparing distributions We have already drawn a box plot for Mrs Galbraith's English test results. Shown below is a box plot displaying the results of Mr Wilson’s Maths test results.

Box plots A box plot is a diagram which provides a quick visual summary of the distribution of a data set. It makes drawing conclusions easier and is useful for comparing two sets of data.

Weibull Analysis Comparing Groups of Data This example illustrates probability plotting and distribution fitting for data grouped by the levels of a special group-variable. The data are from an ...

The following statements use the flight delay data of Example 18.1 to illustrate how to create side-by-side box-and-whisker plots with notches: title 'Analysis of Airline Departure Delays'; title2 ...