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

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(C) In the formula for the arithmetic mean of grouped data,$\bar{x} = \frac{\Sigma f_{i} x_{i}}{\Sigma f_{i}}$:$\bar{x}$ represents the mean of the da

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midvalue of $i$th class

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(C) In the formula for the arithmetic mean of grouped data,$\bar{x} = \frac{\Sigma f_{i} x_{i}}{\Sigma f_{i}}$:$\bar{x}$ represents the mean of the data.$f_{i}$ represents the frequency of the $i$th class.$x_{i}$ represents the class mark or the mid-value of the $i$th class interval,calculated as $\frac{	ext{Upper limit} + 	ext{Lower limit}}{2}$.Therefore,$x_{i}$ represents the mid-value of the $i$th class.

Class	$10-30$	$30-50$	$50-70$	$70-90$	$90-110$
Frequency	$17$	$f_{1}$	$32$	$f_{2}$	$19$

Class	$5-10$	$10-15$	$15-20$	$20-25$	$25-30$	$30-35$
Frequency	$11$	$20$	$35$	$20$	$8$	$6$

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

Similar Questions

The mean of the following frequency distribution is $60$ and the total frequency is $120$. Find the missing frequencies $f_{1}$ and $f_{2}$.

Class $10-30$ $30-50$ $50-70$ $70-90$ $90-110$

Frequency $17$ $f_{1}$ $32$ $f_{2}$ $19$

$Z - \bar{x} = \dots \times (M - \bar{x})$

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

Class $5-10$ $10-15$ $15-20$ $20-25$ $25-30$ $30-35$

Frequency $11$ $20$ $35$ $20$ $8$ $6$

For some given data,if $M = 62.5$ and $\bar{x} = 64$,then $Z = \ldots$

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

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