Question 1154873: pam is 17 years old; her sister is 9; her two brothers are 11 and 7 years old. what is the mean of their ages? Answer by Theo(13342) (Show Source):
You can put this solution on YOUR website! it would be equal to (17 + 9 + 11 + 7) / 4
mean is the average.
it is equal to the sum of the elements divided by the number of elements.
the sum in this case is 44
the number of elements is 4
the the mean is the average = 44/4 = 11.
