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C A double bar graph is a graphical display of information using bars at various heights. We can use a double bar graph to compare two data groups.
Number of students is the length of the bar.
For the year 2018, draw bars of height 10, 5, 15, 10 against Cricket, Tennis, Chess and Fotball respectively.
For the year 2019, draw bars adjacent to the previous bars of height 5, 10, 20, 15 against Cricket, Tennis, Chess and Fotball respectively.
Red bar shows the number of students played a certain sports in 2018 and Dark blue bar shows the number of students played a certain sports in 2019.