Which of the following indicators will always improve when more variables are added to a regression equation?
A) the magnitudes of the coefficients
B) the t-test
C) R2
D) the standard errors of the coefficients
C
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If the market interest rate increases, then
a. the cost of borrowing increases and so saving falls b. the opportunity cost of consuming a good in the future increases and saving, therefore, increases c. the opportunity cost of consuming a good in the future increases and saving, therefore, falls d. the reward for saving diminishes and so present consumption increases e. the reward for saving increases and so saving increases
John is a seller in an affiliated-values auction environment where bidders are risk neutral. Which auction yields John the greatest expected revenue?
A. English B. Second price C. First price D. All of the choices are revenue equivalent.
In a labor-market pooling equilibrium with high-skill and low-skill workers and where a costly educational degree is used as a signaling device, all else equal, an increase in the wage differential between high- and low-skill workers leads to
A) an increase in the required minimum share of high-skill workers. B) a decrease in the required minimum share of high-skill workers. C) no change in the required minimum share of high-skill workers. D) None of the above answers are correct.
The average total cost curve of a firm is U shaped.
Answer the following statement true (T) or false (F)