Question 82(i)
In a public library, the following observations were recorded by the librarian in a particular week.
DaysMonTueWedThurFriSatNewspaper readers400600350550500350Magazine readers150100200300250200
Draw a double bar graph choosing a appropriate scale.
Steps to construct the bar graphs are as follows:
Step I We draw two lines perpendicular to each other on a graph paper and call them horizontal and vertical axes.
Step II Along the horizontal axis, we mark the days and along the vertical axis, we mark the readers.
Step III We choose a suitable scale to determine the heights of bars. Here, we choose the scale as 1 small division to represent 50.
Step IV First, we draw the bars for newspaper readers and then bars for magazine readers for different days.
Bars for newspapers and magazine readers are shaded separately and the shading is shown in the top right corner of the graph paper.