Question

The class mark of certain frequency distribution are 47,52,57,62,67,72,77​

Answer 1

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Given class mark :(xi)

47, 52,57,62,67,72,77

Class size (h)

= Difference of two

consecutive class marks

= 52 - 47

= 5

Now,

Class limits :

(xi - h/2, xi +h/2)

Class size (h)

Difference of two

consecutive class marks

=52 - 47

= 5

Now ,

Class limits :

(xi - h/2, xi + h/2)

( 47 - 5/2, 47 + 5/2)

= ( 47-2.5 , 47 + 2.5)

= ( 44.5 - 49.5 )

Therefore,

44.5 - 49.5

49.5 - 54.5

54.5 - 59.5

59.5 - 63.5

63.5 - 67.5

67.5 - 72.5

72.5 - 77.5

Step-by-step explanation:

100% correct answer

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