Filter
Top Products
338
Example 22
Viewing Other Lines Representing Constant Fit
E Click AIC, BCC, and BIC in turn.
Notice that the slope of the adjustable line becomes increasingly negative. This reflects
the fact that the five measures (C, C – df, AIC, BCC, and BIC) give increasing weight
to model complexity. For each of these five measures, the adjustable line has constant
slope, which you can confirm by dragging the line with the mouse. By contrast, the
slope of the adjustable line for C / df is not constant (the slope of the line changes when
you drag it with the mouse) and so the slope for C / df cannot be compared to the slopes
for C, C – df, AIC, BCC, and BIC.
Viewing the Best-Fit Graph for C
E In the Plot window, select Best fit in the Plot type group.
E In the Fit measure group, select C.
Figure 22-5: Smallest value of C for each number of parameters