Question

Draw the bar graph of the following data
The population of India in successive census years:

Year	1941	1951	1961	1971	1981	1991	2001
Population (in millions)	320	360	440	550	680	850	1000

Answer 1

Hint: For drawing the graph we take the years on X-axis and population on Y-axis. By assuming some scale to both the axes we plot the graph in rectangles each year, which means we take ten years as one unit which will be the breadth of the rectangle and the population as the length of the rectangle.

Complete step-by-step solution:
Let us assume that the years on X-axis and the population on Y-axis.
Now, let us create a table extending the given data to one column of having the coordinates of points to be represented on the graph as follows

Year	Population(in millions)	Co-ordinates
1941	320	(1941, 320)
1951	360	(1951, 360)
1961	440	(1961, 440)
1971	550	(1971, 550)
1981	680	(1981, 680)
1991	850	(1991, 850)
2001	1000	(2001, 1000)

Now, let us take the scale
On X-axis 1 unit is equal to 10 years
On Y-axis 1 unit is equal to 100 million
By using this scale let us plot the bar graph of the given data.

Therefore the bar graph of the given data is drawn.

Note: Students may miss some points that are listed below.
(i) We need to draw a bar graph in rectangles, not as points.
(ii) After drawing the rectangles we have to give some color or design or some shading to the rectangles to avoid confusion.
(iii) Mention corresponding Y-axis values on the rectangles to avoid confusion.
(iv)The years need to be taken in the range which means we take the same population over the decade because it is a bar graph.
The above points need to be taken care of, to get a perfect bar graph.