OBP {UsingR} | R Documentation

## On base percentage for 2002 major league baseball season

### Description

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)`.

### Usage

    data(OBP)

### Format

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.

### Source

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.

### Examples

    data(OBP)
    hist(OBP)
    OBP[OBP>.5]                     # who is better than 50

[Package UsingR version 0.1-4 Index]