The following regression model was fitted to data on 60 U.S. female amateur golfers:

where
y` = winnings per tournament in dollars
x1 = average length of drive in yards
x2 = percentage times drive ends in fairway
x3 = percentage times green reached in regulation
x4 = percentage times par saved after hitting into sand trap
x5 = average number of putts taken on greens reached in regulation
x6 = average number of putts taken on greens not reached in regulation
x7 = number of years the golfer has played
The numbers in parentheses under the coefficients are the estimated coefficient standard errors. Write a report summarizing what can be learned from these results.

164,683 + 341 .10x1 + 170.02x2 + 495.1%-4.23x4 (167.18) (305.48) 90.0) (100.59) -136040x5-35,549x6 + 202.52x7 (106.20) (25.634) (16,240) R2 .516