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Statistical Programming in SAS
book

Statistical Programming in SAS

by John Bailer
April 2015
Intermediate to advanced content levelIntermediate to advanced
460 pages
14h 45m
English
SAS Institute
Content preview from Statistical Programming in SAS
188 Statistical Programming in SAS
contrast 'plastic vs. rest' condition 3 1 1 1;
This statement specifies the coefficients of the contrast and provides a label for output.
The ORDER=DATA option in the GLM statement guarantees that the first coefficient, 3,
corresponds to plastic (the first condition in the data set). The second coefficient, –1,
corresponds to vacuum, and so on. The results of this contrast test are the following:
Contrast DF Contrast SS Mean Square F Value Pr > F
plastic vs. rest
1 9.98560000 9.98560000 86.19 <.0001
These results suggest that the plastic mean log-bacterial count differs from the average of ...
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Publisher Resources

ISBN: 9781607645047