Question

Find the class mark of the class 15-25.
A) 10
B) 15
C)20
D)25​

Answer 1

Answer:

c) 20

Step-by-step explanation:

Class mark of class interval 15-25 is 20.

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Answer 2

Class mark:—

$\frac{lower \: limit \: + \: upper \: limit}{2} \\ \\ = \frac{15 \: + \: 25}{2} \\ \\ = \: \frac{40}{2} \\ \\ = \: 20$

Hence option c is correct,

Class mark of the class 15 - 25 = 20 .