Question

In the supernova table of Light.model, which uses Light to explain variation in WgtGain4, what does the PRE of .60 mean?

A) There is a .60 chance that this explanatory variable helps us make better predictions of the outcome variable
B) .60 of the sum of squares from the empty model is explained by the Light groups
C) .60 of the sample has a relationship between WgtGain4 and Light groups
D) .60 of the sum of squares from the Light.model is explained by the Light groups

Answer 1

The PRE of .60 in the supernova table of Light. model means that .60 of the sum of squares from the Light. model is explained by the Light groups.

Step-by-step explanation:

The PRE (Proportional Reduction in Error) of .60 in the supernova table of Light. model means that .60 of the sum of squares from the Light. model is explained by the Light groups. This indicates the proportion of variation in the outcome variable, WgtGain4, that is accounted for by the variation in the Light groups. In other words, the Light groups contribute to explaining 60% of the variability in WgtGain4.