The following table gives the distribution of $45$ students across the different levels of intelligent quotient. Draw the histogram for the data.

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Solution

$\Rightarrow$ The above graph shows histogram of given frequency table.
$x - a x i s -$ IQ Level
$y - a x i s -$ Number of students.

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IQ	60-70	70-80	80-90	90-100	100-110	110-120	120-130
No. of patients	3	6	9	11	11	7	2

IQ	60-70	70-80	80-90	90-100	100-110	110-120	120-130
Students	3	6	5	9	11	7	2

IQ's:	125.5 to 13.25	118.5 to 125.5	111.5 to 118.5	104.5 to 111.5	97.5 to 104.5	90.5 to 97.5	83.5 to 90.5	76.5 to 83.5	69.5 to 76.5	62.5 to 69.5
No. of pupils:	1	3	4	6	10	12	15	5	3	1

75

I V

Marks obtained	$0 - 10$	$10 - 20$	$20 - 40$	$40 - 45$	$45 - 60$	$60 - 70$	$70 - 85$
No. of students	$4$	$8$	$20$	$10$	$12$	$6$	$15$

The following table gives the frequency distribution of marks obtained by $28$ students.

$\begin{matrix} Marks & 30 & 31 & 32 & 33 Frequency & 5 & 7 & 10 & 6 \end{matrix}$

Construct the cumulative frequency table for the given data.

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