Construct frequency polygon for the following data.
Class interval frequency
$5 - 10$ $2$
$10 - 15$ $5$
$15 - 20$ $7$
$20 - 25$ $6$
$25 - 30$ $1$
$30 - 35$ $9$
$35 - 40$ $14$
$40 - 45$ $8$

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Solution

Class Interval Frequency Mid point
$05 - 10 10 - 15 15 - 20 20 - 25 25 - 30 30 - 35 35 - 40 40 - 45$ $257619148$ $07.5 12.5 17.5 22.5 27.5 32.5 37.5 42.5$

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Similar questions

Class:	$5 - 10$	$10 - 15$	$15 - 20$	$20 - 25$	$25 - 30$	$30 - 35$	$35 - 40$	$40 - 45$
Frequency:	$5$	$6$	$15$	$10$	$5$	$4$	$2$	$2$

CI	$0 - 5$	$5 - 10$	$10 - 15$	$15 - 20$	$20 - 25$	$25 - 30$	$30 - 35$	$35 - 40$	$40 - 45$	$45 - 50$
$f$	$9$	$13$	$6$	$12$	$9$	$6$	$10$	$15$	$6$	$4$

Marks	0-5	5-10	10-15	15-20	20-25	25-30	30-35	35-40	40-45	45-50
Frequency	3	5	7	8	10	11	14	19	15	13

Q_{3}

Marks Group	$5 - 10$	$10 - 15$	$15 - 20$	$20 - 25$	2 $5 - 30$	$30 - 35$	$35 - 40$	$40 - 45$
No. of Students	$5$	$6$	$15$	$10$	$5$	$4$	$2$	$1$

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