Modeling and Multivariate Methods - SAS

Chapter 3 Fitting Standard Least Squares Models 109
Effect Options
LSMeans Plot
The LSMeans Plot option plots least squares means (LSMeans) plots for nominal and ordinal main effects
and interactions.
Example of an LS Means Plot
1. Open the Popcorn.jmp sample data table.
2. Select Analyze > Fit Model.
3. Select yield and click Y.
4. Select popcorn, oil amt, and batch and click Add.
5. Select popcorn in the Construct Model Effects section and batch in the Select Columns section.
6. Click Cross to obtain the popcorn*batch interaction.
7. Click Run.
8. Hold down the CTRL key. From the red triangle menu for one of the effects, select LSMeans Plot.
Tip: Holding down the CTRL key broadcasts the command to all of the effects.
Figure 3.43 LSMeans Plots for Main Effects and Interactions
Figure 3.43 shows the effect plots for main effects and the two-way interaction.
To transpose the factors of the LSMeans plot for a two-factor interaction, hold down the SHIFT key and
select the LSMeans Plot option. (In this example, you must first deselect the LSMeans Plot option and
then select it again, holding down the SHIFT key.) Figure 3.44 shows both the default and the transposed
factors plots.