Draw double bar graph for the following data
Score on the practical test and test

Student	Practice test	test
Jeff	60	70
Peter	75	90
John	55	55
Mary	80	95

Hint: There will be two axis in which horizontal axis will be of marks of student of vertical axis will name of axis 1st mark marks of jeff on the graph and plot and draw a rectangular bar then mark peter marks after that john and then Mary. Color practice test bar as blue and test bar as red.

Complete step-by-step answer:
Jeff marks in practical test 60 and in test he got 70 so mark the no. on the graph, draw a horizontal bar with different color blue for practical and red for test. Leave some distance for the next student so it will look clean.
Similarly with Peter, John and Mary mark their marks and draw a horizontal bar in which blue for practical and red for test.


Note: Horizontal double bar – a graph showing pairs of bars that represent two types of related data. Type of data must be differentiated to reduce the confusion and make graphs easy to understand. Horizontal axis will be the value of data and vertical name of the data.