Draw a frequency polygon for the following data:

Items 4 5 6 7 8 9 10

Frequency 4 6 10 25 22 18 12

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Solution

Frequency polygon under discrete series can be represented as:

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Similar questions

Size of Items	3−4	4−5	5−6	6−7	7−8	8−9	9−10
Frequency	3	7	22	60	85	32	9

Class interval	1−10	11−20	21−30	31−40	41−50	51−60
Frequency	8	3	6	12	2	7

Class-Interval	0−5	5−10	10−15	15−20	20−25	25−30	30−35	35−40
Frequency	5	7	15	18	16	9	6	3

Size	5−10	10−15	15−20	20−25	25−30	30−35	35−40	40−45	45−50
Frequency	6	10	18	30	15	12	10	6	4

Class interval	5− 10	10 − 15	15 − 25	25 − 45	45 − 75
Frequency	6	12	10	8	18

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