Question

If the class marks of a continuous frequency distribution are 22,30,38,46,54,62, then the class corresponding to the class mark 46 is

Answer 1

Answer:

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The corresponding class mark for 42 is 50

Given:

Frequency distribution of marks are "22", "30", "38", "46", "54", "62"

To find:

The corresponding class mark

Answer:

Given that

Class marks are "22", "30", "38", "46", "54", "62"

The difference of class marks are, h=8

Where,

a = class marks and

h =class difference.

Lower \ limit \ of \ class, = a - \frac {h} {2}Lower limit of class,=a−

2

h

Upper \ limit \ of \ class, = a + \frac {h} {2}Upper limit of class,=a+

2

h

Lower \ limit = 46 - \frac {8}{2}Lower limit=46−

2

8

= 46 - 4 = 42=46−4=42

Upper \ limit = 46 + \frac {8}{2}Upper limit=46+

2

8

= 46 + 4=46+4

= 50=50