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Regression and causation

In the BRFSS dataset, there is a strong relationship between vegetable consumption and income. The income of people who eat 8 servings of vegetables per day is double the income of people who eat none, on average.

Which of the following conclusions can we draw from this data?

A. Eating a good diet leads to better health and higher income.

B. People with higher income can afford a better diet.

C. People with high income are more likely to be vegetarians.

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