Question

The Variance Inflationary Factor (VIF) measures the

Select one:

a. standard deviation of the slope

b. contribution of each X variable with the Y variable after all other X variables are included in the model

c. correlation of the X variables with each other

d. correlation of the X variables with the Y variable

Which of the following will not change a nonlinear model into a linear model?

Select one:

a. Square-root transformation

b. Logarithmic transformation

c. Variance inflationary factor

d. Quadratic regression model

Using the best-subsets approach to model building, models are being considered when their

Select one:

a. Cp ≤ k

b. Cp ≤ (k + 1)

c. Cp > k

d. Cp > (k + 1)

Answer 1

The Variance Inflationary Factor (VIF) measures the

c. correlation of the X variables with each other

Reason: It measures how X are correlated among themselves ( multicollinearity

Which of the following will not change a nonlinear model into a linear model?

c. Variance inflationary factor

Reason: Other three are the measures of converting non linear model into linear

Using the best-subsets approach to model building, models are being considered when their

d. Cp > (k + 1)