Construction of a cumulative frequency table | vedclass

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(A) cumulative frequency table is a statistical tool used to organize data by summing the frequencies of each class interval up to a certain point.Thi

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median

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(A) cumulative frequency table is a statistical tool used to organize data by summing the frequencies of each class interval up to a certain point.This table is specifically required to calculate the median of a grouped frequency distribution.The formula for the median is $Median = l + \left( \frac{\frac{n}{2} - cf}{f} ight) 	imes h$,where $cf$ represents the cumulative frequency of the class preceding the median class.While mean and mode can be calculated using simple frequency tables,the cumulative frequency is essential for the median.

Class	$0-20$	$20-40$	$40-60$	$60-80$	$80-100$
Frequency	$5$	$15$	$20$	$18$	$2$

Class	$15-35$	$35-55$	$55-75$	$75-95$	$95-115$
Frequency	$17$	$f_1$	$32$	$f_2$	$19$

Construction of a cumulative frequency table is useful in determining the

Similar Questions

Find the median of the following frequency distribution:
Class $0-20$ $20-40$ $40-60$ $60-80$ $80-100$
Frequency $5$ $15$ $20$ $18$ $2$

The formula $\ldots \ldots$ represents the empirical relationship between the measures of central tendency.

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

The mean of the following frequency distribution is $65$ and the total frequency is $100$. Find the missing frequencies $f_{1}$ and $f_{2}$.

Class $15-35$ $35-55$ $55-75$ $75-95$ $95-115$

Frequency $17$ $f_1$ $32$ $f_2$ $19$

The mode of the observations $4, 5, 6, 3, 4, 3, 3, 2, 3, 5$ is $\ldots \ldots \ldots \ldots .$

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