Find new score value from mean change

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A sample n=7 scores has a mean of M=5 After one new score is added to the sample, the new mean is found to be M=6. What is the value of the new score? (Hint: compare the values for EX before and after the score was added) Solution the total is 7*5=35. if one person with x is added then the new total is 35+x and the new mean is 35+x/(7+1)=6 35+x =48 x = 13.

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Find new score value from mean change

1. A sample n=7 scores has a mean of M=5 After one new score is added to the sample, the new mean is found to be M=6. What is the value of the new score? (Hint: compare the values for EX before and after the score was added) Solution the total is 7*5=35. if one person with x is added then the new total is 35+x and the new mean is 35+x/(7+1)=6 35+x =48 x = 13