solve 1, 4 and 5


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solve 1, 4 and 5 1 answer below » need solution for the above problems Document Preview: 1. A sample of n observations corresponding to the model Y=??+ ??X + u, gave the following results: ?????? ???? ?????? = 50 and ?????? ???? ???????? ???? ???? = 80 i. Estimate the ??. ii. Consider the regression of Y on X, ???? (r is the coefficient of correlation between X and Y) may be interpreted as the proportion of the Y variation attributable to the linear regression on X. Analyze. 2. Write the ten assumptions of the Classical View complete question » need solution for the above problems Document Preview: 1. A sample of n observations corresponding to the model Y=??+ ??X + u, gave the following results: ?????? ???? ?????? = 50 and ?????? ???? ???????? ???? ???? = 80 i. Estimate the ??. ii. Consider the regression of Y on X, ???? (r is the coefficient of correlation between X and Y) may be interpreted as the proportion of the Y variation attributable to the linear regression on X. Analyze. 2. Write the ten assumptions of the Classical Linear Regression Model. 3. Define ???? and ?? ????. What is their important property? Show the relation between them. 4. You have the two-variable regression as ????=????+????????+????, where the standard error of ?? ?? ??, which is calculated as Se(?? ?? ??)= ???? ???? ????. Discuss two factors that could determine the standard error of ?? ?? ?? to be smaller in order to obtain the precision of the estimator. 5. There are cases where the two-variable PRF can be assumed without intercept and the regression equation can be formed as ????=????????+?????? Show the major differences of such nonintercept regression model when comparing to the normal two-variable model with intercept. Attachments: 7020X.pdf View less » Mar 13 2014 06:53 AM

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