SOLUTION: In a math test. two students scored 96, five student scored 81, four students scored 74 and one student scored 55.find the class average.

Question 662124: In a math test. two students scored 96, five student scored 81, four students scored 74 and one student scored 55.find the class average.
Found 3 solutions by radh, MathTherapy, kevwill:
Answer by radh(108)   (Show Source): You can put this solution on YOUR website!
To solve this, just list out the numbers.
2 students scored 96 = 96 96
5 students scored 81 = 81 81 81 81 81
4 students scored 74 = 74 74 74 74
1 student scored 55 = 55
How many total students are there? 2+5+4+1=10 students. Now add all of the data points together and you get 948. Divide that by the total number of students, 10, and your class average is 94.8. Hope this helps! :)
Answer by MathTherapy(10553)   (Show Source): You can put this solution on YOUR website!

In a math test. two students scored 96, five student scored 81, four students scored 74 and one student scored 55.find the class average.

Class average =
Answer by kevwill(135)   (Show Source): You can put this solution on YOUR website!
The original solver's method was correct but the arithmetic was wrong. The sum of the scores is 948. However, there are 12 scores, not 10, so the average is really 948/12 = 79.

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