TI-84 output from a linear model for predicting armspan (in centimeters) from height (in inches) is given in the figure. Summary statistics are also provided.
To do parts a–c, assume that the association between armspan and height is linear.
a. Report the regression equation, using the words “Height” and “Armspan,” not x and y, employing the output given.
b. Verify the slope by using the formula b = r sy/sx.
c. Verify the y-intercept using a = y-bar – bx-bar.
d. Using the regression equation, predict the armspan (in centimeters) for someone 64 inches tall.

  • CreatedJuly 16, 2015
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