For the frequency polygon, identify the 1st class interval.

0-2

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2-6

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0-4

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None of these

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Solution

The correct option is C 0-4
Internal between two point(mid point of bars) $6 - 2 = 4$
$∴$ Length of class $= 4$
Lower class Boundary $= 0$
$∴$ 1st class interval $0 - 4$

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Similar questions

Class Interval	$0 - 20$	$20 - 40$	$40 - 60$	$60 - 80$	$80 - 100$
Frequency	$10$	$17$	$26$	$22$	$15$

u n i t^{2}

Class-interval	0−20	20−30	30−40	40−60	60−100
Frequency	10	4	6	14	16

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