Mathematics, 30.03.2020 17:02 cairolove228
A simple regression model is used to forecast sales with advertising expenditures. The regression output indicates that the coefficient of advertising expenditures is positive and statistically significant. The output also indicates that the correlation between sales and advertising expenditures is 0.9132. Based on these results, we can conclude that spending more on advertising causes sales to go up.
O True
O False
Answers: 3
![r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n\sum x^2 -(\sum x)^2][n\sum y^2 -(\sum y)^2]}}](/tpl/images/0570/4559/ec454.png)
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A simple regression model is used to forecast sales with advertising expenditures. The regression ou...
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