Question

write the formula for finding Arithmetic mean by step deviation method of a data and explain each term​

Answer 1

The formula for finding Arithmetic mean by step deviation method is $A+\dfrac{Σf_{i}d_{i}}{n}$ .

Step-by-step explanation:

To find, the formula for finding Arithmetic mean by step deviation method of a data and explain each term = ?

Arithmetic mean $=A+\dfrac{Σf_{i}d_{i}}{n}$

Where, n = Σ f_{i}

$d_{i}$ is the deviation  $=x_{i} -A$

$x_{i}$  is the class interval

$=\dfrac{Upper limit+Lower limit}{2}$

A is the middle term assume mean

Hence, the formula for finding Arithmetic mean by step deviation method is $A+\dfrac{Σf_{i}d_{i}}{n}.$