FINALLY…the simplest ESTIMATE statements to write are for continuous variables not involved in interactions or higher order terms. Consider a data set containing the 2004 SAT scores for each of the 50 states. The file includes the combined math and v…
Tag: estimate statement
"Easy button" for ESTIMATE statements
My previous blog demonstrated the most difficult type of ESTIMATE statement to write—a two-way (or higher) ANOVA with interactions. An “easy button” for ESTIMATE statement comes by having a simpler model. Models with only main effects and no interact…
The magical ESTIMATE (and CONTRAST) statements
When asked to select the best (or worst) of something in a business setting, do you wish you had “magic glasses” to see the answer? PROC GLM and other statistical modeling procedures have their own versions of such an item with their ESTIMATE (and CONT…
Example 8.9: Contrasts
In example 8.6 we showed how to change the reference category. This is the natural first thought analysts have when their primary comparisons aren’t represented in the default output. But our interest might center on a number of comparisons which don…