Urgent brainliest givenross rolled an ordinary dice 30 times. the frequency table gives information about his results.(see picture) ross worked out the mean score as 8. (a) explain why it is impossible for the mean score to be 8.graham also worked out the mean score. here is his working.(b) describe the mistake graham made in his method to work out the mean.

(A) it is impossible for the mean score to be 8 because the mean is the average and there is no 8 even on the table or on an ordinary die numbered 1-6, therefore You cannot get an average of 8 if there is no existence of an 8 on the die or in the score.

(B) To get the mean of the score, you should list the numbers and put how many numbers the frequency is. (Example: 1,1,1,1,1,1,1.) because on the chart it says the 1 has a frequency of 7. So your list should look like this:
1,1,1,1,1,1,1,2,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,5,5,6,6,6,6
So then you add them all up:
The 1’s=7
The 2’s=10
The 3’s=12
The 4’s=16
The 5’s=30
The 6’s=24
Then you get a grand total of 99, then you divide for how many numbers you had in your list which is 30, then you divide 99 by 30 (99/30=x) and when you do the math x should equal 3.3, so the mean of the scores is 3.3.

Ithink it’s b because it say 3 plastic rings and all the balls