Remember that n = > f is the total number of data points. In this case, the number of kids in the population would be n. n 126 Let's put the data in a table to help organize our work. x (age f (# of kids) 6 26 7 22 8 40 9 38 Part 3 of 3 Next, we add the x . f column to our table: f x . f 6 26 22 8 40 38 And then we take the sum of the x . f column and divide by n to get the mean: Ex . f I = = 7.71 (round to two decimals) n