On base percentage for 2002 major league baseball season
The on base percentage, OBP, is a measure of how often a players gets
on base. It differs from the more familiar batting average, as it
include bases on balls (BB) and hit by pitches (HBP). The exact
formula is OBP = (H + BB + HBP) / (AB + BB + HBP + SF).
data(OBP)
438 numbers between 0 and 1 corresponding the on base “percentage” for the 438 players who had 100 or more at bats in the 2002 baseball season. The "outlier" is Barry Bonds.
This data came from the interesting Lahman baseball data base
http://www.baseball1.com/. The names attribute uses the playerID
from this database. Unfortunately there were some errors in the
extraction from the original data set. Consult the original for
accurate numbers.
data(OBP) hist(OBP) OBP[OBP>.5] # who is better than 50%? (only Barry Bonds)
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