Question

The class mark of the class 18 - 22

Answer 1

Step-by-step explanation:

class. mark=(upper limit+lower limit)/2

=(18+22)/2

=40/2

=20

Answer 2

The class mark of the class 18 -22 is 20.

Explanation:

We know that in statistics ,

• The class mark is the midpoint of the class interval. It lies in the center of the class interval.

For class a-b , the class mark = $\dfrac{a+b}{2}$

The given class : 18-22

Then , the class for this class would be $\dfrac{18+22}{2}$

$=\dfrac{40}{2}=20$

Hence, the class mark of the class 18 -22 is 20.

# Learn more :

The class marks in a frequency distribution are 19.5,26.5,33.5,40.5 then the class corresponding to the class mark 33.5 is ______.

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