Name: Representation of Data by Creating Histogram
Uploaded: 2019-07-19
Duration: 6 min 41 s
Description: The histogram is the most powerful tool to present the data on the number line. Let's watch this video to learn how to represent the data and analyse them.

Question

The following table gives the distribution of intelligence quotient (IQ) of $60$ pupils of class VIII in a school.

IQ	$60 - 70$	$70 - 80$	$80 - 90$	$90 - 100$	$100 - 110$	$110 - 120$	$120 - 130$
Number of pupils	$2$	$3$	$5$	$16$	$14$	$13$	$7$

Draw a histogram for the above data.

Accepted Answer

Given,

The following table gives the distribution of intelligence quotient (IQ) of $60$ pupils of class VIII in a school.

IQ $60 - 70$ $70 - 80$ $80 - 90$ $90 - 100$ $100 - 110$ $110 - 120$ $120 - 130$

Number of pupils $3$ $5$ $16$ $14$ $13$ $7$ $7$

Procedure to draw histogram:

(i) On a graph paper, take two perpendicular lines, one horizontal and the other vertical, intersecting at O. Mark them as $OX$ and $OY$ .

(ii) The horizontal line $OX$ is the $x -$ axis and vertical line $OY$ is the $y -$ axis.

(iii) Represent class limits along the $x -$ axis with a suitable scale.

(iv) Represent frequencies along the $y -$ axis with a suitable scale.

(v) Construct rectangles with class intervals as base and respective frequencies as heights.

(vi) Select a scale depending upon the data as convenience. The scale for the $x -$ axis should not be equal to the scale of the $y -$ axis.

Lets take scale as follows:

Represent the Age in $x -$ axis, $1 big square = 10 units$

Represent the number of persons in $y -$ axis, $1 big square = 2 units$

Hence, the required answer is shown above.

Activity	Sleeping	School	Homework	Playing	Others	Total
Number of hours	$8$	$7$	$4$	$2$	$3$	$24$

Items	Agriculture	Industries and minerals	Irrigation and power	Communication	Miscellaneous
$₹$ (in crore)	$6000$	$4000$	$2500$	$4500$	$3000$

Items	Food	Clothing	Rent	Education	Miscellaneous
Expenditure $(₹)$	$4000$	$2000$	$1500$	$1500$	$1000$

The following table gives the distribution of intelligence quotient (IQ) of $60$ pupils of class VIII in a school.

IQ $60 - 70$ $70 - 80$ $80 - 90$ $90 - 100$ $100 - 110$ $110 - 120$ $120 - 130$

Number of pupils $2$ $3$ $5$ $16$ $14$ $13$ $7$

Draw a histogram for the above data.

Important Questions on Data Handling

Learn and Prepare for any exam you want !

The following table gives the distribution of intelligence quotient (IQ) of 60 pupils of class VIII in a school. IQ 60-70 70-80 80-90 90-100 100-110 110-120 120-130 Number of pupils 2 3 5 16 14 13 7 Draw a histogram for the above data.

Important Questions on Data Handling

Learn and Prepare for any exam you want !

The following table gives the distribution of intelligence quotient (IQ) of $60$ pupils of class VIII in a school.

IQ $60 - 70$ $70 - 80$ $80 - 90$ $90 - 100$ $100 - 110$ $110 - 120$ $120 - 130$

Number of pupils $2$ $3$ $5$ $16$ $14$ $13$ $7$

Draw a histogram for the above data.