use https://bigblue.depaul.edu/jlee141/econdata/eco304/nba_stat

1) Estimate a model relating points-per-game (points) to years in league (exper), age, and years played in college (coll). Include a quadratic in exper. Describe the model based on the output; R square, t-test, F test, and signs of the coefficients. Do they make sense? 2) Holding college years and age fixed, at what value of experience does the next years of experience reduce points? Does this make sense? 3) Explain why years of play in college (coll) has a negative and statistically significant coefficient. 4) Add quadratic in age to the equation. Is it needed? What does it appear to imply about the effects of age? Show work and models on Stata (upload screenshot to submission folder)