Data frame consisting of the following variables:
Data is aggregated into half seasons: so season indicates whether the observation is in the first or second half of the season of a given year. Only players who have more than 10 at bats in any half season are included, and only players who have more than three half seasons are represented. The transformed batting average is arcsin(sqrt((H + 1/4)/(AB + 1/2))). Only regular seasons data are included. R programs to extract the data from the original sources are available on request.
HA transformed batting average;
AB at bats
YOB Year of Birth;
age age of the player
agesq age squared
ESPN Website: http://espn.go.com/mlb/statistics
Gu, Jiaying and Roger Koenker (2015) Empirical Bayesball Remixed: Empirical Bayes Methods for Longitudinal Data, J. Applied Econometrics, forthcoming.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.