The marks obtained by 17 students in a mathematics test (out of 100) are given below:
91, 82, 100, 100, 96, 65, 82, 76, 79,90, 46, 64, 72, 66, 68, 48, 49
The range of the data is
(a) 46
(b) 54
(a) 46
(d) 100
Solution:
(b) 54 is correct
The class mark of the class 90-120 is
(a) 90
(b) 105
(c) 115
(d) 120
Solution:
Class mark = (upper limit + lower limit) / 2
Then, Class mark = 120 + 90 / 2
= 210 / 2 = 105.
(b) 105 is correct
More Solutions:
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