SOLUTION: The mean of a set of five scores is 68. What is the new mean of the set of scores after a score of 20 is added ?
Algebra.Com
Question 908695: The mean of a set of five scores is 68. What is the new mean of the set of scores after a score of 20 is added ?
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
If a mean of 
scores is 
, then the sum of the scores is 
. The new sum if 
is added is 
, and the new mean, 
.
In other words, multiply 68 times 5, add 20 to the product, and divide the final sum by 6.
John
My calculator said it, I believe it, that settles it
RELATED QUESTIONS
The mean score on a set of 20 tests is 75. What is the sum of the 20 test... (answered by rfer)
The mean of nine test scores is 61. If a score of 71 is added to the group of scores,... (answered by Boreal,jim_thompson5910)
The mean for a set of 28 scores is 80. Suppose two more students take the test and score (answered by Edwin McCravy)
The mean for a set of 28 scores is 80. if 2 more students take the test and score 60 and... (answered by Fombitz)
The mean score of a set of 28 tests is 79. what is the sum of all the test... (answered by rothauserc)
A sample of n=9 scores has mean=13. A new score of x=4 is added to sample.
a._______... (answered by Fombitz)
The mean of a set of test scores is 73. If a score of 75 is added to the set and a new... (answered by ankor@dixie-net.com)
Please help me solve this:
A sample of n = 6 scores has a mean of M = 5. One person... (answered by rothauserc)
Sample of n=5 scores has a mean of 12, 1 new score is added and the new mean is... (answered by MathLover1,greenestamps,MathTherapy)
