The marks obtained by $40$ students of a class in an examination are given:
$8, 47, 22, 31, 17, 13, 38, 26, 3, 34, 29, 11, 22, 7, 15, 24, 38, 31, 21, 35, 42, 24,$ $45, 23, 21, 27, 29, 49, 25, 48, 21, 15, 18, 27, 19, 45, 14, 34, 37, 34$ .

Prepare a frequency distribution table with equal class intervals, starting from $0 - 10$ [where $10$ is not included].

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Solution

Given that the marks obtained by $40$ students of a class in an examination are
$8, 47, 22, 31, 17, 13, 38, 26, 3, 34, 29, 11, 22, 7, 15, 24, 38, 31, 21, 35, 42, 24,$ $45, 23, 21, 27, 29, 49, 25, 48, 21, 15, 18, 27, 19, 45, 14, 34, 37, 34$ .

the frequency distribution table with equal class intervals, starting from $0 - 10$ [where $10$ is not included].

frequency table

class intervals Frequency
$0 - 10$
$10 - 20$
$20 - 30$
$30 - 40$
$40 - 50$ $3$
$8$
$14$
$9$
$6$
Total $40$

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class intervals	Frequency
$0 - 10$ $10 - 20$ $20 - 30$ $30 - 40$ $40 - 50$	$3$ $8$ $14$ $9$ $6$
Total	$40$