Problema Solution
In Hockey, a defenseman's plus/minus record(+/-total)determines his success.If he is on ice for a goal by the opposing team, he gets a -1.If he is on the ice for a goal by his team, he gets a +1. Suppose that over 4 games,a defenseman has +/- totals of +2,,-1,-1 and +4 What is the player's average +/- total for the 4 games?
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Solution:
The average is equal to the sum of the plus/minus record over the number of games:
average = (+2 - 1 - 1 + 4)/4
average = +1