SOLUTION: If the mean of a test was 91.5 for 16 students. Then the last student made up the test and scored a 40. What is the final average? I just need an equation to start it out please. A
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Question 773162: If the mean of a test was 91.5 for 16 students. Then the last student made up the test and scored a 40. What is the final average? I just need an equation to start it out please. An answer is not required! Answer by 303795(602) (Show Source):
You can put this solution on YOUR website! The mean is found by dividing the sum of the scores by the number of scores.
You have two of these values for the 16 students with a mean of 91.5. Use these two values and the formula for the mean to find the sum of the 16 scores.
Now add the final score to that sum and recalculate the new mean (average) for the 17 students.
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