Question

Which of the following is NOT correct about causal regression analysis of the form Y = f(X)? A. Selection of the appropriate causal variable Y is important. B. All of the options are correct. C. Selection of the appropriate causal variable X is important. D. Use of past experience to identify X is common. E. Use of economic theory to identify X is common.

Answer 1

Answer:

A. Selection of the appropriate causal variable Y is important

Explanation:

We have this function, Y = f(X).

From this function we can see that Y is dependent on X. That is, it is a function of X. Y is not a causal variable. A causal variable is a variable that is able to influence the variable of interest. From this question Y is the variable of interest. It is the dependent variable. The independent variable is X and it is the causal variable.

Therefore the incorrect one is Selection of the appropriate causal variable Y is important