Batting Average (AVG):  Divide the number of base hits by the total number of at bats. 

                                          (i.e. 206/600=.343)

 

On-Base Percentage (OBP):  Divide the total number of hits plus bases on balls plus hits by

                                                 pitch BY bats plus bases on balls plus hit by pitch plus sacrifice

                                                 flies.  (i.e. (152+59+9)/(434+59+9+6)=220/508=.433)

 

Slugging Percentage (SLG):  Divide the total number of bases of all base hits by the total

                                                number of times at bat.  (i.e. 282/440=.641)

 

Fielding Average:  Divide the total number of putouts and assists by the total number of putouts

                                assists and errors.  (i.e. (218+290)/(218+290+2)=508/510=.996)