Exemplar exercise problems II — task. Mathematics CBSE, Class 9.

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1. To draw a histogram to represent the following frequency distribution:

Class interval	$5 - 10$	$10 - 15$	$15 - 25$	$25 - 45$	$45 - 75$
Frequency	$6$	$12$	$10$	$8$	$15$

The adjusted frequency for the class

$25 - 45$ is:

2. For drawing a frequency polygon of a continuous frequency distribution, we plot the points whose ordinates are the frequencies of the respective classes and abscissae are respectively :

upper limits of the classes
lower limits of the classes
class marks of the classes
upper limits of the preceding classes

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18. Exemplar exercise problems II

Exercise condition: