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Science-Related Homework Help Statistics and Probability Topic started by: emeraldisle on Mar 10, 2018



Title: A multiple regression model is assessed to be good if the error sum of squares SSE and the standard ...
Post by: emeraldisle on Mar 10, 2018
A multiple regression model is assessed to be good if the error sum of squares SSE and the standard error of estimate s are both small, the coefficient of determination R2 is close to 1, and the value of the test statistic F is large.
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Q. 2

The width of a 95 confidence interval is 0.95.
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Q. 3

In multiple regression analysis, when the response surface (the graphical depiction of the regression equation) hits every single point, the sum of squares for error SSE = 0, the standard error of estimate s = 0, and the coefficient of determination R2 = 1.
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Q. 4

One can reduce the width of a confidence interval by taking a smaller sample size.
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Q. 5

When an additional explanatory variable is introduced into a multiple regression model, coefficient of determination adjusted for degrees of freedom can never decrease.
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Title: A multiple regression model is assessed to be good if the error sum of squares SSE and the standard ...
Post by: estherev on Mar 10, 2018
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