## Recreational Math## Sports Numbers |

## What are some of the statistics used in baseball? |

There are numerous statistics used in baseball, including batting and pitching statistics. *Batting statistics* can be divided into several numbers. The *batting average* (AVG) is the number of hits a player makes divided by the number of times at bat. It does not include walks or sacrifice hits. The *runs batted in* (RBI) is the number of runners who scored on a player’s hit, base on balls, or sacrifice. The *on-base plus sluggage* (OPS) is a good measure of a hitter’s ability. This statistic combines getting on-base (on-base percentage, or OBP) and advancing runners (slugging percentage, or SLG). It is also more accurate thanks to the adjustment 1.2 × OBP + SLG, which compensates for the fact that SLG has a wider range than OBP.

*Pitching statistics* include the ERA and WHIP. The *earned run average* (ERA) is the earned runs times the innings in a game (most commonly nine) divided by the innings pitched. The *walks plus hits per inning pitched* (WHIP) records the bases on balls (walks) plus hits divided by innings pitched. It’s a good way to measure the approximate number of walks and hits a pitcher allows in each inning that he pitches. It then compares that amount to other pitchers to formulate a pitcher’s index.