Question

Two sections of Class IX having 30 students each appeared for mathematics Olympiad. The marks obtained by them are shown below: 46,31,74,68,42,54,14,61,83,48,37,26,8,64,57,93,72,53,59,38,16,88,75,56,46, 66,45,61,54,27,27,44,63,58,43,81,64,67,36,49,50,76,38,47,55,77,62,53,40,71, 60,58,45,42,34,46,40,59,42,29
Construct a group frequency distribution of the data above using the classes 0-9, 10-19 etc.,and hence find the number of students who secured more than 49 marks.

Answer 1

Answer:

72 73 81 83 33 54 050 58 13 62