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

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(B) In the given formula for the mean of grouped data,$\bar{x} = \frac{\Sigma f_{i} x_{i}}{n}$:$\bar{x}$ represents the mean.$f_{i}$ represents the fr

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frequency of the $i^{th}$ class

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(B) In the given formula for the mean of grouped data,$\bar{x} = \frac{\Sigma f_{i} x_{i}}{n}$:$\bar{x}$ represents the mean.$f_{i}$ represents the frequency of the $i^{th}$ class.$x_{i}$ represents the class mark (midvalue) of the $i^{th}$ class.$n$ represents the total frequency,which is equal to $\Sigma f_{i}$.Therefore,$f_{i}$ represents the frequency of the $i^{th}$ class.

Class	$0-10$	$10-20$	$20-30$	$30-40$	$40-50$
Frequency	$10$	$12$	$13$	$16$	$9$

Class	$1-3$	$3-5$	$5-7$	$7-10$
Frequency	$9$	$22$	$27$	$17$

In the formula $\bar{x} = \frac{\Sigma f_{i} x_{i}}{n}$,$f_{i}$ represents ..........

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