Given below is the frequency distribution of the heights of 50 students of a class- - Class interval - 140-145 145-150 150-155 155-160 160-165- Frequency- 8 12 18 10 5- - Draw a histogram representing the above data-

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Standard VIII

Mathematics

Histogram

Given below i...

Question

Given below is the frequency distribution of the heights of 50 students of a class:

$\begin{matrix} C l a s s i n t e r v a l : & 140 - 145 & 145 - 150 & 150 - 155 & 155 - 160 & 160 - 165 F r e q u e n c y : & 8 & 12 & 18 & 10 & 5 \end{matrix}$
Draw a histogram representing the above data.

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Solution

We represent class intervals along x-axis and frequency along y-axis. Taking suitable intevals along x-axis and y-axis we construct the rectangles as shown in the figure. This the required histogram.

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Q. Given below is the frequency distribution of the heights of 50 students of a class:

\begin{matrix} Class Interval & 140 - 145 & 145 - 150 & 150 - 155 & 155 - 160 & 160 - 165 Frequency & 8 & 12 & 18 & 10 & 5 \end{matrix}

Draw a histogram representing the above data.

Q. Given below is the frequency distribution of the heights of 50 students of a class:

Class interval:	140−145	145−150	150−155	155−160	160−165
Frequency:	8	12	18	10	5

Draw a histogram representing the above data.

Q. The following distribution represent the height of

160

students of a school.

Height (in $c m$ )	No. of Students
$140 - 145$	$12$
$145 - 150$	$20$
$150 - 155$	$30$
$155 - 160$	$38$
$160 - 165$	$24$
$165 - 170$	$16$
$170 - 175$	$12$
$175 - 180$	$8$

Draw an ogive for the given distribution taking

2 c m = 5 c m

of height on one axis and

2 c m = 20

students on the other axis. Using the graph, determine:
(i) The median height
(ii) The inter quartile range
(iii) The number of students whose height is above

172 c m

Q. Draw a histogram of the following data.

Height of student (cm)	135 - 140	140 - 145	145 - 150	150 - 155
No. of students	4	12	16	8

The median class for the following data is ____.

$\begin{matrix} Height (in cm) & Less than 140 & Less than 145 & Less than 150 & Less than 155 & Less than 160 & Less than 165 No. of girls & 4 & 11 & 29 & 40 & 46 & 51 \end{matrix}$

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Given below is the frequency distribution of the heights of 50 students of a class: Classinterval:140−145145−150150−155155−160160−165Frequency:81218105 Draw a histogram representing the above data.

We represent class intervals along x-axis and frequency along y-axis. Taking suitable intevals along x-axis and y-axis we construct the rectangles as shown in the figure. This the required histogram.

Given below is the frequency distribution of the heights of 50 students of a class:

$\begin{matrix} C l a s s i n t e r v a l : & 140 - 145 & 145 - 150 & 150 - 155 & 155 - 160 & 160 - 165 F r e q u e n c y : & 8 & 12 & 18 & 10 & 5 \end{matrix}$
Draw a histogram representing the above data.