Answer to Question #3015 in Statistics and Probability for jenny

Question

The following table gives the distributions
of marks in a class of 65 students :

Marks No. of students

0 —4 10
4 — 8 12
8 —12 18
12 —16 10
16 —20 5
20 — 24 4
24 and above 6

Calculate mode and semi-inter quartile
range.

Please include details (what is to be done when class interval is given "24 and above"?)