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Question 1

Is Regression Analysis always useful in predicting values? Discuss with examples.

Question 2

A regression line, derived from the least squares mentod (OLS), has only two properties. True or false. If yes, explain. If no, explain with examples

Question 3. There is no difference(s) between the standard error of the sample mean and the standard error of the regression. If true, explain. If false, explain.

Question 4. Does the correlation coefficient and the regression r-squared measure the same concepts. Explain

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