Avolleyball team played five games, the team won by 7 points, lost by 3, lost by 2 , won by 4 and won by 9. what was the mean difference in scores over the five games.

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Step-by-step explanation:

Given:

A volleyball team played five games, the team won by 7 points, lost by 3, lost by 2 , won by 4 and won by 9

To find :  the mean difference in scores over the five games

Solution:

Mean basically refers to sum of all observations divided by number of observations.

The mean of scores over the five games refers to sum of all scores divided by 5.

Scores :

won by 7 points means + 7

lost by 3 means - 3

lost by 2 means - 2

won by 4 means + 4

won by 9 means + 9

Therefore,

sum of all scores = 7 - 3 - 2 + 4 + 9 = 15

Also, total number of games played by the team  = 5

So, mean difference in scores over the five games = sum of all scores /  total number of games played by the team = 15 / 5 = 3

step-by-step explanation: