Calculate the range from the following data.

Marks $0 - 5$ $5 - 10$ $10 - 15$ $15 - 20$ $20 - 25$
No. of students $5$ $12$ $23$ $8$ $2$

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Solution

Lower limit of lower class, $L = 0$
Higher limit of higher class, $H = 25$

Hence, range $= H - L$

$= 25 - 0$

$= 25$ marks

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Marks	$26$	$38$	$54$	$65$	$72$	$88$
No. of students	$5$	$10$	$15$	$20$	$25$	$30$

Marks	$0 - 10$	$10 - 30$	$30 - 60$	$60 - 80$	$80 - 90$
No. of students	$5$	$15$	$30$	$8$	$2$

Colour Pencils	$0 - 5$	$5 - 10$	$10 - 15$	$15 - 20$	$20 - 25$	$25 - 30$
Number of students	$14$	$16$	$17$	$13$	$8$	$12$

Age in Years	:	5-10	10-15	15-20	20-25
Frequency	:	10	15	20	5

Marks	$0 - 20$	$20 - 40$	$40 - 60$	$60 - 80$	$80 - 100$
Number of students	$8$	$10$	$12$	$6$	$3$

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