The double bar graph represents the marks scored by the students in two consecutive academic years. In which subject has the performance improved the most?
Here, the white colour bars represents the performance in the year 2005-06 and the grey colour bar represents the performance in the year 2006 - 07.
The difference between the heights of the white bars and the grey bars tell us the improvement in performance.
From the double bar graph, we observe that the maximum difference between the height of the two bars is for Maths.
Therefore, the students have improved the most in Maths.