Question

27. The marks scored by 20 students in a test are given below:

84.57.53. 89. 41. 57, 47, 64. 58, 44.53.72, 51, 78, 71, 62, 56, 68, 54,42

Marks in class interval
40- 50
50-60
60-70
70-80
80-90

(i) What is the upper limit of 40-50?

(ii) What is the upper limit of 70-80?

(iii) What is the class size?​

Answer 1

40 is upper limit

70 is upper limit

10 is class size