Using the bar chart in the previous question (marks 1–8 with frequencies 3, 6, 9, 1, 12, 7, 5, 10), what percentage of the students scored at most 5 marks?
Marks 1–8 with frequencies 3, 6, 9, 1, 12, 7, 5, 10.
Worked solution (try it first)
"At most 5" means 5 or fewer: marks 1 to 5, which is 3+6+9+1+12=31 students.