First you add up all the numbers in the frequency column to get 30. Then you multiply each row of conceded goals by their frequency. 0 x 2 = 0, 1 x 8 = 8, 2 x 4 = 8, etc. You add all of your answers up to equal 70. Then you divide 70 by the number of conceded goals, which is 30. 70/30 = 2.33 or 2 1/3.
I could be wrong for the number that you divide 70 by.. It might be 70/5 which equals 14. You might have to divide by 5 instead of 30 based on the number of conceded goals instead of the frequency. You might want to check for sure.
