When Might Imperfect Multicollinearity Not Require the Collecting of More

Multiple Choice

When might imperfect multicollinearity not require the collecting of more data to remedy the likely imprecise estimates of the affected variables?

A) When the model suffers from heteroscedasticity as well
B) When you are only conducting hypothesis tests
C) When the imperfect multicollinearity is confined to control variables only
D) When the treatment effect is positive