Baseball Batting Averages

Batting averages for 18 Major League players in the 1970 season, from Table 7.1. This dataset illustrates empirical Bayes estimation, where early-season performance is used to predict full-season batting averages.

Format

A data frame with 18 rows and 3 variables:

Player

Player ID number

MLE

Batting average based on the first 90 at-bats of the season

TRUTH

Batting average for the remainder of the 1970 season

Source

https://hastie.su.domains/CASI_files/DATA/baseball.txt

References

Efron, B. and Hastie, T. (2016). Computer Age Statistical Inference. Cambridge University Press, Table 7.1.

Examples

data(baseball)
str(baseball)
#> 'data.frame':	18 obs. of  3 variables:
#>  $ Player: int  1 2 3 4 5 6 7 8 9 10 ...
#>  $ MLE   : num  0.345 0.333 0.322 0.311 0.289 0.289 0.278 0.255 0.244 0.233 ...
#>  $ TRUTH : num  0.298 0.346 0.222 0.276 0.263 0.273 0.303 0.27 0.23 0.264 ...