under what circumstances could the explanatory power of regression analysis be overstated?
a. the explanatory variables are not correlated with one another
b.the variance of the error term decreases as the value of the dependent variable increases
c.the error term is normally distributed
d. an important explanatory variable is omitted that influences the explanatory variables included, and the dependent variable
answer: d
为什么不是b阿?
question 28:
for which of the following currencies would it be most appropriate to choose a lognormal interest rate model over a normal model?
a. USD
B.JPY
C.DEM
D.GBP
