Attempts: Do No Harm: 13 15. SLR.5 and variance of the OLS slope parameter Suppo

Question

Attempts: Do No Harm: 13 15. SLR.5 and variance of the OLS slope parameter Suppose the simple OLS linear regression model is given as: y = 0+1x4u Although impossible in reality, suppose you know that Var(ux)-7. What does this mean? O The error term exhibits homoskedasticity, but you cannot determine if the OLS estimates will be unbiased. O The error term exhibits heteroskedasticity, and the OLS estimates will be biased. The error term exhibits homoskedasticity, and the OLS estimates will be biased. O The error term exhibits heteroskedasticity, and the OLS estimates will be unbiased Given that the assumptions SLR.1 through SLR.4 hold, and the error term exhibits homoskedasticity with Var(ulx)-2,which of the following represent the variance of 1 ? Check all that apply. (x-x) SSTx (x-x)2 Xi-

Explanation / Answer

15. For Var(u/x) = 7, means that

Correct Answer: option (C)

Variance of beta1-capt is

Correct Answer: option (D)

Graph:

Correct Answer: Sample (B)

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