Question

In a mathematics test following marks were obtained by 40 students of class VI. Arrange these marks in a table using, tally marks.

8	1	3	7	6	5	5	4	4	2
4	9	5	3	7	1	6	5	2	7
7	3	8	4	2	8	9	5	8	6
7	4	5	6	9	6	4	4	6	6

(i) Find how many students obtained marks equal to or more than 7?
(ii) How many students obtained marks below 4?

Answer 1

Frequency distribution of the given marks in Mathematics:

(i) Number of students who have obtained marks equal to or more than 7
= frequency of 7 + frequency of 8 + frequency of 9
= 5 + 4 + 3 = 12

(ii) Numbers of students who have scored below 4
= Frequency of 1 + frequency of 2 + frequency of 3
= 2 + 3 + 3 = 8