Question

Use a graphing calculator to find the equation of the line of best fit for the data. Find the value of the correlation coefficient r.

Jimmy’s Best Long Jumps

Year: 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
Distance(meters): 12.2, 12, 12.6, 13.1, 13.2, 12.8, 13.5, 13.8

(Use x = 0 for 1997.)

A. y= -0.23x+10;r= 0.888845

B. y = –0.864x + 31.15; r = 0.7139281244

C. y = 31.15x + 0.864; r = 0.8449426752

D. y=0.23x-10;r=0.9108884