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Women in workforce scatterplot

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If you were to draw a scatter plot of the number of women in the workforce versus the number of Christmas trees sold in the United States for each year between 1930 and the present, you would find a very strong correlation. Why do you think this would be true? Does one cause the other?

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The expert provides a scatter plot for women in the workforce.

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Women entering the workforce start earning their own money and therefore have more financial freedom to spend the money on decoration and ...

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