Question

write the formula to find arithmetic mean for grouped data by the step deviation method and explain the terms in it

Answer 1

here,

x bar =mean
A= assumed mean
h = upper limit - lower limit
f¡ = frequency
u¡ = x¡-A/h


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Answer 2

hey mate here is your answer

step deviation method= a+( sigma fiui/ sigmafi) × h

a= assumed mean
sigma fiui= sum of fiui
sigma fi= sum of frequency
h= class size

I hope this is your answer

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