![3.7 In a simple regression model, y-, + Ax + u , which of the following is NOT referring to y? (a) Dependent variable (b) Explained variable (c) Predicted variable (d) Regressant (e) All of the above refer to y 3.8 Which of the following statements is correct? (a) If X and Y are independent, then E[YIX]- E[Y (b) If Xand Y are independent, then ElYx] (c) If Xand Y are independent, then E[Y|X] is irrelevant from E[Y] (d) None of the above is correct.](http://img.homeworklib.com/questions/c54f89b0-71e7-11ea-b788-95ef592ffd81.png?x-oss-process=image/resize,w_560)
Homework Answers
Answer : 3.7) The answer is option e.
In regression model, y is a dependent variable, explained variable, predicted variable and regressand. Hence options a, b, c and d all referrs to y. Therefore, option e is correct.
3.8) The answer is option a.
In statistics there is a condition that "if X and Y are independent variables", then
E(Y|X) = E(Y).
Therefore, option a is correct.
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3.7 In a simple regression model, y-, + Ax + u , which of the following...
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3. [Multiple Choice Questions (4 points per question, 32 points in total): Please answer the following questions. 3.1 There is a random variable X with observations 3.5 Which of the following is implied from the law [X,,X2,...,X). It is known that these observations follow the normal distribution with mean μ and variance σ2. Which of the following will lead to a c? of large numbers? (a) If we have a sufficiently large number of observations, its sample mean is close...
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