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Frequency Polygon

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Question

Show the following data by a frequency polygon.
Electricity bill ( $R s$ ) $0 - 200$ $200 - 400$ $400 - 600$ $600 - 800$ $800 - 1000$
Families $240$ $300$ $450$ $350$ $160$

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Solution

Electricity Bill x F
0-200
200-400
400-600
600-800
800-1000 100
300
500
700
900 240
300
450
350
160

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Similar questions

Show the following data by a frequency polygon.

Electricity bill (Rs)	0 - 200	200 - 400	400 - 600	600 - 800	800 - 1000
Families	240	300	450	350	160

Q. Represent the following data using a frequency curve.

Electricity bill in a month (in Rs)	200-400	400-600	600-800	800-1000
No. of families	362	490	185	63

Q. The table shows the classification of

100

families in a locality according to the amount paid against their electricity bill.

Electricity bill (in Rupees)	Number of families
$0 - 200$	$8$
$200 - 400$	$12$
$400 - 600$	$21$
$600 - 800$	$30$
$800 - 1000$	$23$
$1000 - 1200$	$6$

Find the median of the amount paid.

Q. Find the mean of the following data .

Class Interval	Frequency
$0 - 100$	$2$
$100 - 200$	$5$
$200 - 300$	$4$
$300 - 400$	$12$
$400 - 500$	$17$
$500 - 600$	$20$
$600 - 700$	$20$
$700 - 800$	$9$
$800 - 900$	$7$
$900 - 1000$	$4$

Q. The median of the following data is

525

. Find the values of

x

y

, if the total frequency is

100

Class interval	Frequency
$0 - 100$	$2$
$100 - 200$	$5$
$200 - 300$	$x$
$300 - 400$	$12$
$400 - 500$	$17$
$500 - 600$	$20$
$600 - 700$	$y$
$700 - 800$	$9$
$800 - 900$	$7$
$900 - 1000$	$4$

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