Represent the following data using suitable graphical representation.
No. of words typed per minute $30 - 39$ $40 - 49$ $50 - 59$ $60 - 69$ $70 - 79$
No. of typists $2$ $8$ $15$ $12$ $3$

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Solution

$N o . o f w o r d s t y p e d i n m i n u t e$ $N o . o f t y p i s t$
$29.5 - 39.5$ $2$
$39.5 - 49.5$ $8$
$49.5 - 59.5$ $15$
$59.5 - 69.5$ $12$
$69.5 - 79.5$ $3$
From above data we are going to draw histogram.

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Similar questions

No. of words typed per minute	30-39	40-49	50-59	60-69	70-79
No . of typists	2	8	15	12	3

$C I$	$10 - 19$	$20 - 29$	$30 - 39$	$40 - 49$	$50 - 59$	$60 - 69$	$70 - 79$	$80 - 90$
$f$	$3$	$7$	$5$	$11$	$6$	$8$	$4$	$5$

Class interval	$10 - 19$	$20 - 29$	$30 - 39$	$40 - 49$	$50 - 59$	$60 - 69$	$70 - 79$
Frequency	$6$	$4$	$10$	$9$	$11$	$8$	$2$

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