Based on the histogram, estimate the mean spin rate (in revolutions per minute) for the sample of five-iron shots. Carry your intermediate computations to at least four decimal places, and round your answer to the nearest integer. Solution Mean spin rate = (5*5250+11*5750+15*6250+21*6750+17*7250+6*7750)/(5+11+15+21+17+6) = 6596.66rpm.