Which explanatory variable is least significant corstacklos

Which explanatory variable is least significant?

> cor(stackloss Air.Flow Water.Temp Acid.Conc. stack.loss 18 22 26 10 25 40 Air.Flow 1.0000000 0.7818523 0.50014290.9196635 Water. Temp0.7818523 1.0000000 0.3909395 0.8755044 Acid.Conc. 0.5001429 0.3909395 1.0000000 0.3998296 stack.loss 0.9196635 0.8755044 0.3998296 1.0000000 Air Flow Water Temp Acid.Conc.8 50 60 70 80 75 85

Solution

Coefficient of determination = R² = 0.9136

Interpretation: 91.36% of variation in the response variable is explained by the model.

Explanatory variable which is least significant is the one which has the highest P-Value:

Answer: Acid.conc (with P-Value 0.34405)