Question: Prepare a line graph of these data. Do the data appear to be stationary or nonstationary? Refer to the data in the file that accompanies

Prepare a line graph of these data. Do the data appear to be stationary or nonstationary?

Refer to the data in the file that accompanies this book named MortgageRates.xlsx containing average monthly 30-year mortgage rates over 82 consecutive months.

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