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## Statistics

The ANOVA table from the regression analysis yields the F-statistic and its p-value. The p-value of the F-ratio has to be compared with the level of significance, say 0.05. If the p-value of F is less than 0.05, then we can conclude that there is significant linear relationship between sales and newspaper advertisement.

You have been provided with the following regression output. The dependent variable is unit sales of a product, and the independent variable is dollar value of newspaper advertising for that product. The unit of analysis is weeks; that is, each of the observations in underlying sample data represents a separate week of sales and newspaper advertising.

Regression Analysis: Sales versus Newspaper
the regression equation is
Sales = 6514 + 0.0386 Newspaper

 Predictor Co-eff SE Co-eff T P Constant 6514 1138 5.72 0.000 Newspaper 0.038625 0.005494 7.03 0.000

S = 5630.70   R-Sq = 24.3%   R-Sq(adj) = 23.8%

Analysis of Variance

 Source DF SS MS F P Regression 1 1567134272 1567134272 49.43 0.000 Residual Error 154 4882532724 31704758 Total 155 6449666996

Is there a relationship between sales and newspaper?

Statistics and Probability, Statistics

• Category:- Statistics and Probability
• Reference No.:- M921054

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