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

1 thought on “The class mark of certain frequency distribution are 47,52,57,62,67,72,77​”

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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

   Hope it’s helpful ✌️✌️

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