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    Regression Analysis

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    Please solve the exercise below:

    Consider the following partial computer output for a multiple regression model.

    Predictor Coefficient Standard Deviation

    Constant 41.225 6.380
    X1 1.081 1.353
    X2 -18.404 4.547

    Analysis of Variance

    Source DF SS
    Regression 2 2270.11
    Error 26 3585.75

    What is the number of observations in the sample?

    Write the least squares regression (prediction) equation. Test the usefulness of variable x2 in the model at alpha =.05. Calculate the t statistic and state your conclusions.

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    Solution Summary

    The solution provides step by step method for the calculation of regression analysis. Formula for the calculation and Interpretations of the results are also included.