If a grade of A is earned by getting a score in the 90s, B in the 80s, C in the 70s, D in the 60s, and F for scores below 60, what is the shape of the distribution of scores? Rather than finding the m...If a grade of A is earned by getting a score in the 90s, B in the 80s, C in the 70s, D in the 60s, and F for scores below 60, what is the shape of the distribution of scores? Rather than finding the mean by adding every individual value and dividing by the total number of values (18+18+18+18+18+19+…+4025), we can instead find the mean of this grouped data by using the frequencies listed in the table.