Batting Average Calculator
Batting Average=Hits/Official At Bats
Official At Bats=Plate Appearances - Walks - Hit By Pitch - Sacrifices

Hits
Appearances
Walks
Hit by Pitch
Sacrifices

Numer of Official At Bats
This is Your Batting Average

Earned Run Average
ERA=Earned Runs/Innings Pitched x Number of Innings
Earned Runs
Innings Pitched
Number of Innings per Game

This is Your Earned Run Average
 
Slugging Percentage
Slugging Percentage=Total Bases/Official At Bats
Official At Bats=Plate Appearances - Walks - Hit By Pitch - Sacrifices
Total Bases=Singles + 2xDoubles + 3xTriples + 4xHomeruns
Singles
Doubles
Triples
Home Runs
Official Times at Bat

This is Your Slugging Percentage