1.A golf pro wants to investigate the relation between the club-head speed of a golf club (measured in MPH) and the distance (in yards) that the ball will travel.Here are numbers he has gathered

Speed Distance

90 257

102 264

103 274

101 266

105 277

100 263

90 258

105 275

a)Determine the linear correlation coefficient (r) between speed and distance. (Use your calculator). Explain what it means.

b)Using your calculator determine the slope (a) of the least squares regression line.

c)Using your calculator, determine the y intercept (b) of the least squares regression line.

d)Write out the least squares regression line in the form y = ax + b.