I have one dependent variable
C and four independent variables:
The correlation matrix between them is the following
TPA VPT S TPA - - - VPT -0.37 - - S 0.04 0.00 - SD 0.05 -0.04 0.01
VPT have a moderate negative linear relationship.
Now I want to create a regression model:
C ~ S + SD + VPT + TPA
Does it makes sense to consider the correlation between
TPA in the model? If so, what should I add to it to consider the correlation?