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Math · Statistics And Probability
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g) Use the corr command to find the correlation between tuit17 and tuit18. Explain why using the average tuition over two years might be preferred to adding both tuition variables to the model as separate explanatory variables. Create a variable for average tuition and re-estimate the model using this variable (but exclude tuit 17 and tuit18). What happens to the statistical significance of tuition when you use the average over two years h) Do the results for the average tuition variable make sense when interpreted causally? What might be going on?

Can you help me for G) AND H)? :)

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