Question

THE CLASS MARK OF A FREQUENCY DISTRIBUTION ARE GIVEN BELOW : 38, 43, 48,53, 58. THE CLASS CORRESPONDING TO THE CLASS MARK 43 IS​

Answer 1

Answer:

Step-by-step explanation:ow to find class interval when class mark is given. First find the difference of the class marks. Then divide the differnce by 2. And then subtracted the answer and also add it.Feb 9, 2016

Answer 2

The class corresponding to the class mark 43 is 40.5 - 45.5

Given :

The class mark of a frequency distribution are given as 38, 43, 48, 53, 58.

To find :

The class corresponding to the class mark 43

Solution :

Step 1 of 2 :

Find class size

Here it is given that the class mark of a frequency distribution are given as 38, 43, 48, 53, 58

We know for a given frequency distribution class size is the difference between two successive class mark

So the class size of the frequency distribution

= 43 - 38

= 5

Step 2 of 2 :

Find the class corresponding to the class mark 43

Here the given class mark is 43

Then for the class mark 43

Lower class limit

$\displaystyle \sf{ = Class \: mark - \frac{Class \: size}{2} }$

$\displaystyle \sf{ = 43 - \frac{5}{2} }$

$\displaystyle \sf{ = 43 - 2.5 }$

$\displaystyle \sf{ = 40.5 }$

Upper class limit

$\displaystyle \sf{ = Class \: mark + \frac{Class \: size}{2} }$

$\displaystyle \sf{ = 43 + \frac{5}{2} }$

$\displaystyle \sf{ = 43 + 2.5 }$

$\displaystyle \sf{ = 45.5 }$

Hence the class corresponding to the class mark 43 is 40.5 - 45.5

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