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(D) To find the median class and modal class,we first prepare the cumulative frequency table:						Class			Frequency $(f)$			Cumulative Frequency $(cf

Vedclass · Accepted Answer

$25$

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(D) To find the median class and modal class,we first prepare the cumulative frequency table:						Class			Frequency $(f)$			Cumulative Frequency $(cf)$							$0-5$			$10$			$10$							$5-10$			$15$			$25$							$10-15$			$12$			$37$							$15-20$			$20$			$57$							$20-25$			$9$			$66$			$1$. Total frequency $N = 66$. So,$\frac{N}{2} = \frac{66}{2} = 33$.$2$. The cumulative frequency just greater than $33$ is $37$,which corresponds to the class interval $10-15$. Thus,the median class is $10-15$,and its lower limit is $10$.$3$. The highest frequency is $20$,which corresponds to the class interval $15-20$. Thus,the modal class is $15-20$,and its lower limit is $15$.$4$. The sum of the lower limits is $10 + 15 = 25$.

Monthly consumption (in units)	Number of consumers
$65-85$	$4$
$85-105$	$5$
$105-125$	$13$
$125-145$	$20$
$145-165$	$14$
$165-185$	$8$
$185-205$	$4$

Class	$0-30$	$30-60$	$60-90$	$90-120$	$120-150$	$150-180$
Frequency	$8$	$15$	$16$	$20$	$12$	$9$

Marks	$0-10$	$10-20$	$20-30$	$30-40$	$40-50$	$50-60$	$60-70$	$70-80$
Number of students	$26$	$26$	$x$	$110$	$84$	$y$	$36$	$32$

For the following distribution:

Class $0-5$ $5-10$ $10-15$ $15-20$ $20-25$

Frequency $10$ $15$ $12$ $20$ $9$

the sum of the lower limits of the median class and the modal class is:

Similar Questions

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

Is it true to say that the mean,mode,and median of grouped data will always be different? Justify your answer.

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

Class $0-30$ $30-60$ $60-90$ $90-120$ $120-150$ $150-180$

Frequency $8$ $15$ $16$ $20$ $12$ $9$

The frequency distribution of marks obtained by $400$ students is given below. If the mean of the frequency distribution is $41.2$,find the missing frequencies $x$ and $y$.
Marks $0-10$ $10-20$ $20-30$ $30-40$ $40-50$ $50-60$ $60-70$ $70-80$
Number of students $26$ $26$ $x$ $110$ $84$ $y$ $36$ $32$

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Class	$0-5$	$5-10$	$10-15$	$15-20$	$20-25$
Frequency	$10$	$15$	$12$	$20$	$9$

For the following distribution: Class $0-5$ $5-10$ $10-15$ $15-20$ $20-25$ Frequency $10$ $15$ $12$ $20$ $9$ the sum of the lower limits of the median class and the modal class is: