1. Based on the below data what will be the value of SST? 0.158349 -------------

Question

1.

Based on the below data what will be the value of SST?

0.158349

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2.

Based on the below data what will be the value of R2?

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3.Based on the below data what is the result of the regression equation for the 15th month?

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4.Based on the below data what will be the value of multiple R?

Regression Statistics Multiple R R Square Adjusted R Square Standard Error Observations 8 ANOVA df SS MS F Regression 1 25 25 8 Residual 6 21 3 Total 7 Coefficients Standard Error t Stat P-value Intercept 0 31.274666 3.984284 0.007248 Advertising (thousands of $) 36 6.19330674 1.610802

0.158349

Explanation / Answer

1) SST = SS Reg + SS Res = 25+21 = 46

2) R-squared = Explained variation / Total variation

= 30/(30+29) = 0.508

3) The regression equation is formed using the coefficients as

Y = 11 +36*Advertising

4)

lets first calculate the r square value as

Explained variation / Total variation

SS Reg / SS Total = 34/(34+16) = 0.68

now r = sqrt(rsquare) = sqrt(0.68) = 0.8246

Hope this helps !!

Please rate the solution . Thanks

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