The following table gives the final marks of a sample of first year statistics students. XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX (a) Construct a grouped data frequency table...

The following table gives the final marks of a sample of first year statistics students.

32 34 44 48 60 32 26 48 86 40 58 64 16
70 92 76 24 46 88 22 26 80 78 34 32 26
40 28 80 78 9 20 76 36 44 24 21 44 24

(a) Construct a grouped data frequency table for the data, with relative and cumulative frequencies given as percentages. Use the groups 0 - 19, 20 - 39, . . . , 80 - 100.
(b) What percentage of students achieved a mark of less than 40%?
(c) What percentage of students achieved 60% or more?