Question

The Olympic winning men’s long jump distances (in meters) from 1896 to 2008 and the fitted regression line for predicting them using x = year are displayed in the MINITAB output below.
a. Identify an observation that may influence the fit of the regression line. Why did you identify this observation?
b. Which do you think is a better prediction for the year 2012—the sample mean of the y values in this plot or the value obtained by plugging 2012 into the fitted regression equation?
c. Would you feel comfortable using the regression line shown to predict the winning long jump for men in the year 3000? Why or why not?


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  • CreatedSeptember 11, 2015
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