Question

How to find class interval when class mark is given

Answer 1

Class mark is half of class interval.
therfore bye multiplying 2 to class mark, u will get class interval:)

Answer 2

Answer:

$class\:mark = \frac{Lower\:limit + Upper\:limit }{2}$

Step-by-step explanation:

$class\:mark = \frac{Lower\:limit + Upper\:limit }{2}$

Example:

Let class interval 30-40

Lower limit = 30,

Upper limit = 40,

$Class \:mark(x)= \frac{30+40}{2}\\=\frac{70}{2}\\=35.5$

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