Question

Following data gives the number of Hindi and English books bought by a library during the year. Year 2002 2003 2004 2005 2006 Hindi 350 400 520 600 650 English 300 380 400 450 600 Answer the following : In which year the difference in the purchase of two language books was : Minimum 2) Maximum

Answer 1

Step $1:$ To find out minimum and maximum difference in the purchase of two language book we will drawing bar graph from given data:

Steps of constructing bar graph:

1. Mark the horizontal axis name as years. We will represent English book in orange color and Hindi books in blue color on the vertical axis and the vertical axis as Number of people.

2. Along the horizontal axis , choose bars of uniform (equal) width, with a uniform gap between them.

3. Choose a suitable scale to determine the heights of the bars, according to the space available for the graph. Here, we choose $1$ small division to represent $100$ people.

Step $2:$ To finding out minimum and maximum difference in the purchase of two language book

From the bar graph we can see in $2003$ the difference was the minimum, that is $400-380=20$

Also from the bar graph we can see in $2005$ the difference was the minimum, that is $600-450=150$

Hence, minimum difference is $20$ and maximum difference is $150$