In the formula bar{x} = A + frac{Sigma f_{i} | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) The given formula $\bar{x} = A + \frac{\Sigma f_{i} u_{i}}{\Sigma f_{i}} 	imes c$ represents the Step-Deviation Method for calculating the mean o

Vedclass · Accepted Answer

$\frac{x_{i} - A}{c}$

Vedclass · Answer

(C) The given formula $\bar{x} = A + \frac{\Sigma f_{i} u_{i}}{\Sigma f_{i}} 	imes c$ represents the Step-Deviation Method for calculating the mean of grouped data.In this formula,$A$ is the assumed mean,$c$ is the class size (width),and $x_{i}$ is the class mark.The variable $u_{i}$ is defined as the deviation of the class mark from the assumed mean,divided by the class size.Therefore,$u_{i} = \frac{x_{i} - A}{c}$.

Height (in $cm$)	Number of students
$150-155$	$15$
$155-160$	$13$
$160-165$	$10$
$165-170$	$8$
$170-175$	$9$
$175-180$	$5$

In the formula $\bar{x} = A + \frac{\Sigma f_{i} u_{i}}{\Sigma f_{i}} \times c$,$u_{i} =$ .........

Similar Questions

In the formula $M = l + \frac{(\frac{n}{2} - cf)}{f} \times h$ for the median,$h = \ldots \ldots \ldots$

If $M = 72$ and $\bar{x} = 70$,then $Z = \ldots \ldots \ldots \ldots$

Find the mean,median,and mode of the following frequency distribution:

Class $0-10$ $10-20$ $20-30$ $30-40$ $40-50$

Frequency $5$ $27$ $58$ $20$ $10$

If the modal class of a frequency distribution is $70-85,$ then in the formula for mode,$l=$ ..........

Vedclass Test Series

Exam Paper Generator

Online Exam Module