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Industrial Statistics with Minitab by Xavier Tort-Martorell Llabres, Lluis Marco Almagro, Pere Grima Cintas

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2.4 Histograms for Various Data Sets

Using the option Calculator located within the Calc menu, we can create the column named ‘Increment’ that defines the difference between the final pulse rate and the initial pulse rate as follow.

Calc > Calculator

nc02uf011.eps

A comparison of pulse increments, depending on whether the student has run or not, can be done through their histograms, as follows.

Graph > Histogram: with Outline and Groups

Putting ‘Increment’ as the variable to represent and ‘ran’ as a categorical variable to form the groups, we obtain (the display shows a different color for each histogram):

nc02uf012.eps

Another option with a more clear result is Graph > Histogram: Simple.

Graph > Histogram: Simple

nc02uf013.eps
To have a list of all available graphs and worksheets click on Window in the main menu. All worksheets and graphs created and not deleted appear at the end.

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