Question

The following data gives the production of foodgrains (in thousand tonnes) for somes years:

Year	1995	1996	1997	1998	1999	2000
Production (in thousand tonnes)	120	150	140	180	170	190

Represent the above data with the help of a bar graph.

Answer 1

Let's draw two mutually perpendicular lines OX and OY.
Along the horizontal line OX, let's mark the years; and along the vertical line OY, let's mark the production of food grains in tonnes.
Along the axis OX, let's choose an equal width for each bar, keeping the gap between the bars the same.
We will now choose a suitable scale to determine the heights of the bars.
Here, let's consider 1 big division = 20 thousand tonnes.
Therefore, the heights of the various bars are as follows:
Height of the bar against the year 1995 $=\frac{120}{20}=6$ units.
Height of the bar against the year 1996 $=\frac{150}{20}=7.5$ units.
Height of the bar against the year 1997 $=\frac{140}{20}=7$ units.
Height of the bar against the year 1998 $=\frac{180}{20}=9$ units.
Height of the bar against the year 1999 $=\frac{170}{20}=8.5$ units.
Height of the bar against the year 2000 $=\frac{190}{20}=9.5$ units.
Based on the above calculations, the bar graph is as follows: