Information Technology Reference
In-Depth Information
Figure 16.19
The data file equivalent to what we used in SPSS.
16.11 EVALUATING THE ANCOVA ASSUMPTIONS IN SAS
16.11.1 LINEARITY OF REGRESSION
The assumption that the dependent variable and the covariate are related
in a linear manner is most easily assessed by examining the scatterplot.
If you have not already done so, import the data file from Excel into
an
SAS Enterprise Guide
project. From the main menu select
Graph
➜
Scatter Plot
. This brings you to the screen shown in Figure 16.25. Select
2D Scatter Plot
.
