Construct a frequency polygon for the following distribution:
Class-intervals
$0 - 4$
$4 - 8$
$8 - 12$
$12 - 16$
$16 - 20$
$20 - 24$
Frequency
$4$
$7$
$10$
$15$
$11$
$6$

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Solution

Class interval Frequency Mid point of class
$0 - 4$ $4$ $2$
$4 - 8$ $7$ $6$
$8 - 12$ $10$ $10$
$12 - 16$ $15$ $14$
$16 - 20$ $11$ $18$
$20 - 24$ $6$ $22$

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Similar questions

Class	$4 - 8$	$8 - 12$	$12 - 16$	$16 - 20$	$20 - 24$	$24 - 28$
Frequency	$9$	$6$	$12$	$7$	$15$	$3$

Class	$4 - 8$	$8 - 12$	$12 - 16$	$16 - 20$	$20 - 24$	$24 - 28$
Frequency	$9$	$16$	$12$	$7$	$15$	$1$

16

Class	0-4	4-8	8-12	12-16	16-20	20-24	24-28	28-32	32-36
Frequency	6	8	17	23	16	15	-	4	3

Class-interval	0−4	4−8	8−12	12−16	16−20	20−24
Frequency	10	15	20	25	20	10

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Class-intervals	$0 - 4$	$4 - 8$	$8 - 12$	$12 - 16$	$16 - 20$	$20 - 24$
Frequency	$4$	$7$	$10$	$15$	$11$	$6$