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Regression for forecasting

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Using SPSS, MiniTab, or Excel and the data provided in the attached Excel spreadsheet see if sales (sales12x) is is influenced by the number of mailings (mail12x)and contacts( contacts)?

Explain any other correlations you may discover.

forcasting:

For all of the customers that have had no sales (zero) in the (sales12x) variable would increasing the number of mailings (mail12x) to these customers increase the number of sales? Why or why not? Can you predict the increase or decrease in sales and by how much?

Would assigning a sales rep (sales rep variable) to customers that have had no sales (sales12x) increase the number of sales? Why or why not? Can you predict the increase or decrease in sales and by how much?

Would assigning a sales rep and increase the number of mailings increase sales? Why or why not? Can you predict the increase or decrease in sales and by how much?

Show your work if possible.

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Solution Summary

The expert uses SPSS to influence the number of mails.The correlations are discovered.

Solution Preview

After Plotting the scatter plot between sales and contacts there doesnt seem to be a concrete relation between the 2.
The best estimate is :
y = 1.9784x2 + 818.82x
R2 = 0.4948 ( see chart ...

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