These data are used in the book "Computational Statistics" 
by G.H. Givens and J.A. Hoeting.

Name: baseball.dat
Chapter: 3, 8
Discussed in: Examples 3.3, 3.5, 3.6, 3.7, 8.4; Problems 3-3.4

Source: Baseball data from M.R. Watnik (1998), "Pay for Play: Are
Baseball Salaries Based on Performance", Journal of Statistics
Education, Volume 6, number 2
(http://www.amstat.org/publications/jse/v6n2/datasets.watnik.html)

Description: Salaries in 1992 and 27 performance statistics for 337 baseball
players (no pitchers) in 1991.

Variable labels: See Table 3.1 for more details.
salary ($1000s) 
average = batting average
obp = on base percentage
runs = runs scored
hits 
doubles 
triples 
homeruns 
rbis = runs batted in
walks 
sos = strike outs
sbs = stolen bases
errors 
freeagent (or eligible for free agency)
arbitration (or eligible for arbitration)
runsperso = runs/sos
hitsperso = hits/sos
hrsperso = homeruns/sos
rbisperso = rbis/sos
walksperso = walks/sos
obppererror = obp/errors
runspererror = runs/errors
hitspererror = hits/errors
hrspererror = homeruns/errors
soserrors = sos*errors
sbsobp = sbs*obp
sbsruns = sbs*runs
sbshits = sbs*hits