As a manager I am interested in finding out which factor most strongly correlates with my weekly sales. I am the product manager for Nutella, a food supplement product. I think that the amount spent on advertising, the unit price and the number of people selling my product all influence my annual sales. But I only have limited resources and need to focus on the one most important factor. Run a correlation matrix and tell me which one I should focus on$.$

Also discuss what you learned from the other correlations.

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