4. A friend is planning to sell her used Honda so she gathers data on prices (in thousands of dollars) and year (let 79 represent 1979) for eleven cars similar to
hers. A scatterplot of the data is shown. The linear regression equation for these
data has the equation: price=0.735-year-59.5. Your friend's Honda is a 1988. Use
the regression model to establish a selling price for her car.
10
6
Price (thousand $)
4
2
78 80 82 84 86 88 90 92 94
Year
price = 0.735 . year – 59.5; r2 = 0.87