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9. The average hourly earnings and the average tuition at public four-year institutions of higher education in the United States for
Year | Average Hourly Earnings (dollars) | Average Tuition at Four –Year Institutions (dollars) |
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Figure
Source: Bureau of Labor Statistics and National Center for Education Statistics.
a. Letting
b. Find the line of best fit.
c. Predict the average tuition when the average hourly earning is
d. Predict the average hourly earning when the average tuition is
e. Find the coefficient of
f. Are the predictions in parts (c) and (d) reliable? Why or why not?
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