What are the assumptions of simple linear regression? A. The mean of the random

Question

What are the assumptions of simple linear regression? A. The mean of the random error is 0 B. The variance of the random error is constant for all possible C. The distribution of the random error is normal D. The values of the random error is normal D. The values of the random errors associated with two observed y are independent E. All of the above Which of the following figures shows the constant variance of the random error? If the outlier circled is removed from the regression, will R^2 A. Increase B. Decrease C. Keep unchanged For the same x point, the width of the confidence interval for the mean always than the width of the prediction interval for the new observation Bigger than B. Smaller than C. The same as

Explanation / Answer

For the given questions the right answers are as follows:

Question 1 : Option E

Question 2 : Option C

Question 3: Option B

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