If the cumulative frequency at a particular class interval 30 -35 is 19 and the cumulative frequency at the next class -interval i.e 35-40 is 27 , the frequency at 35-40 is __________

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Solution

The correct option is B
8

The cumulative frequency is the sum of all the frequencies till a particular class interval.

If the cumulative frequency at 30-35 is 19 and the cumulative frequency at 35-40 is 27

Hence the frequency at 35-40 is 27 -19 = 8

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Similar questions

Marks Obtained	$10 - 20$	$20 - 30$	$30 - 40$	$40 - 50$
Cumulative Frequency	$7$	$35$	$27$	$34$

40 - 50 =

If the cumulative frequency for the class interval (30-40) is 70 and for class interval (50-60) is 150 , then the value of y =

$\begin{matrix} Class Interval & 0 - 10 & 10 - 20 & 20 - 30 & 30 - 40 & 40 - 50 & 50 - 60 Frequency & 12 & 20 & x & 18 & 10 & y \end{matrix}$

\begin{matrix} Marks & Cumulative frequency Less than 10 & 5 Less than 20 & 16 Less than 30 & 35 Less than 40 & K Less than 50 & 80 \end{matrix}

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