Exercise

Significant holiday or promotional effects?

You have built a regression model saved as the object model_MET_hi_full. This object has had additional holidays and a promotion added to it. Use the console and the summary function to investigate the results of the regression model and the coefficients from the regression. Which of the following statements is FALSE about the holidays (Valentine's Day, Christmas, and New Year's) and the Mother's Day promotion. Use 0.01 as significant.

Instructions

50 XP

Possible answers

The high end product isn't significantly effected by New Year's.

The Mother's Day promotion is significantly helping increase sales.

Valentine's Day doesn't lead to a significant increase in sales.

All of the above are true.

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Instructions

Possible answers

Exercise