Question

find the class mark of the class interval 22.5-25.5

Answer 1

Step-by-step explanation:

=22.5+25.5/2

=22.5+25.5/2=48/2 =22.5+25.5/2=48/2=24

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Answer 2

The class mark of the class interval 22.5 - 25.5 is 24

Given :

The class interval 22.5 - 25.5

To find :

The class mark of the class interval

Concept :

Class Mark :

For any grouped frequency table with class intervals, the middle value of the class limits or the class boundaries of any class is called class mark of the class

Solution :

Step 1 of 3 :

Write down the given class interval

The given class interval is 22.5 - 25.5

Step 2 of 3 :

Write down Upper Class boundary & Lower class boundary

For the given class interval 22.5 - 25.5

Upper Class boundary = 25.5

Lower class boundary = 22.5

Step 3 of 3 :

Find class mark of the class interval

The class mark of the class interval

$\displaystyle \sf{ = \frac{Upper \: Class \: boundary + Lower \: class \: boundary }{2} }$

$\displaystyle \sf{ = \frac{25.5 + 22.5}{2} }$

$\displaystyle \sf{ = \frac{48}{2} }$

$\displaystyle \sf{ = 24}$

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