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Step 1
First, you need to determine how many bases a player has reached for each at bat. A single equals one (1) base. A double two (2) bases, a triple equals three (3) bases and a home run equals four (4) bases
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Step 2
Take the amount of bases a player has reached during the course of the season and total them together. For example, if a player batted 10 times with two singles, one triple and seven strike outs, he would have reached a total of 5 bases. 1 (single) + 1 (single) + 3 (triple) = 5 bases.
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Step 3
Then determine, how many times the player has come up to bat. Using the example above, let's presume he batted 10 times.
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Step 4
Then, divide the total number of bases reached, by the total 'at bats' and you'll have the slugging percentage.
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Step 5
In this case you would divide 5 by 10 for a slugging average/percentage of .500 (5/10=.500 slugging average)







