How to read a multiple regression equation

pds58

New Member
#1
How would I read this regression equation in Minitab: Amt of Ag=5.7 - 0.0156 H2O Temp + 0.239 Speed + 0.44 Thick of Ag + 0.0449 Water
Ag is Silver and I know that 5.7 is the constant.
But in layman's terms what is +0.239 Speed and the others telling me?
 

hlsmith

Omega Contributor
#2
Those are the model coefficients (weights) for the predictors, for a one unit increase in the predictor ag increases by that much on average while holding other predictors constant.
 

pds58

New Member
#3
Those are the model coefficients (weights) for the predictors, for a one unit increase in the predictor ag increases by that much on average while holding other predictors constant.
So if I need the 'Thick of Ag' to rise by 25% and as long as I keep the other predictors constant, I need to raise the 'Amt of Ag' by 25% That makes sense. Thank you