Author Question: If Xit is correlated with Xis for different values of s and t, then A) Xit is said to be ... (Read 106 times)

krzymel · **on:** Jun 29, 2018

If Xit is correlated with Xis for different values of s and t, then

A) Xit is said to be autocorrelated
B) the OLS estimator cannot be computed
C) statistical inference cannot proceed in a standard way even if clustered standard errors are used
D) this is not of practical importance since these correlations are typically weak in applications

Question 2

The following are properties of the logarithm function with the exception of

A) ln(1/ x) = -ln(x).
B) ln(a + x) = ln(a) + ln(x).
C) ln(ax) = ln(a) + ln(x).
D) ln(xa) a ln(x).