Statistical modelling/Milk offtake

The output also shows how care must be taken in interpreting the parameter estimates. Each is corrected for the others in the model with the t-value measuring the significance of the parameter when included in addition to all other parameters in the model.

The accumulated analysis of variance, on the other hand, shows the additional sum of squares accounted for as each variable is added in turn. The order in which the terms are included to the model is important. Each sum of squares is corrected for variables already included in the model but not for those to be added later. Therefore the F-value has a different interpretation from the t-value.