Question

Class mark of class interval 60-70 is
(a) 60
(b) 70
(c) 65
(d) 75 ​

Answer 1

Answer:

65 [ Option (c) ]

Step-by-step explanation:

Class mark is the mid point of the class interval.

Therefore, the class mark for the interval 60−70 is :

= 60 + 70

______

2

= 130

___

2

= 65

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