October 2012
Beginner
420 pages
9h 37m
English
book
Industrial Statistics with Minitab
by Pere Grima Cintas, Lluis Marco Almagro, Xavier Tort-Martorell Llabres
Content preview from Industrial Statistics with Minitab
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11.2 ANOVA with a Single Factor
Example 11.1: The technicians of a paper processing company decide to carry out an experiment in order to study which variety of tree produces less contents of phenols in the waste of paper pulp. The following data represent the quantities obtained (in %).
Do any of the tree varieties produce more phenols?
This problem deals with the comparison of the means of three treatments, being ‘Variety of tree’ the only factor under study.
If we place the data for each type of tree in a different column, we have to proceed as shown below.
Stat > ANOVA > One-Way (Unstacked)
In the worksheet, both the residuals and the fitted values are stored (we checked these options in the initial dialog box).
If the data of the three varieties of trees are stored in one single column, we have to choose the following.
Stat > ANOVA > One-Way
All options and results ...
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