Question

write the formal of find the mean by step derivation method and also explain terms in it​

Answer 1

Step-by-step explanation:

Here,

x bar =mean

A= assumed mean

h = upper limit - lower limit

f¡ = frequency

u¡ = x¡-A/h

HOPE THIS WILL HELP YOU

Answer 2

Step-by-step explanation:

formula of step deviation method

=a+fiui/fi*h

a is assumed number by us.

h is difference between two class interval

xi is upper class+lower class/2

ui is xi-a/h

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