Question

Write the formula of step deviation method and explain its terms

Answer 1

Answer:

x = a + { sigma f¡u¡ ÷ sigma f¡ }

Step-by-step explanation:

a is assumed mean

fi is the frequency

ui is xi - di ÷ h

Answer 2

Answer:

The formula for Step deviation is given by

$\overline{X}=A+[\frac{\sum fd}{\sum f}\times c ]$  

Step-by-step explanation:

To write the formula for Step deviation method and explain their terms :

The Arithmetic Mean of the given grouped data by using the method of  Step deviation.

The formula for Step deviation is given by

$\overline{X}=A+[\frac{\sum fd}{\sum f}\times c ]$    

Where A is the assumed mean  (The middle value in the data )

, f is the frequency in the grouped data, where $d=\frac{X-A}{c}$ and  $\sum f$ is the Sum of the frequencies, c is the common factor