Question

Write the formula for mean of ungrouped frequency distributing by deviation method nd explain the terms in it

Answer 1

Answer:

Ungrouped data is the type of distribution in which the data is individually given in a raw form. For example, the scores of a batsman in last 5 matches are given as 45,34,2,77 and 80. Deduction of range and mean deviation from this data will help us to conclude his form and performance. Here, we will be studying methods to calculate range and mean deviation for individual series distribution.

Answer 2

Answer:

Mean, \overline x= A+h\dfrac { \sum_{i=1}^n { f_iu_i}  }{ \sum_{i=1}^n { f_i }  }x= A+h∑i=1nfi ∑i=1nfiui 

Where,

h =h= Class size

u_i = \dfrac { x_i-A }{ h}ui=hxi−A

A=A= The middle value that is assumed as the mean for calculation,

\sum_{i=1}^n f_i =∑i=1nfi= Sum of the frequencies given, can be denoted by NN.