Bar graph2





                       In this page 'Bar graph2' we are going to see bar graphs for more than one independent variables and one dependent variables.

More than one independent and one dependent variable:

Types:

  1. Grouped bar graph
  2. Composite bar graph

Grouped bar graph

                  Like the usual graphs we have to draw and we have to add the second or third independent variables. Since we are using more than one independent variable we have to use different color codes. For example,  the number of defective cars produced in all 4 units the consecutive two years 2012 and 2013.

                          Here we had drawn the graph as usual but we had use different colors to denote the  independent variables. Instead of drawing separate graphs it is very easy for us to compare if we draw the graphs together. We can compare for more than two independent variables using different colors.

Composite bar graph 

              Composite bar graphs are used to compare the data with the whole. Some times we used stacked bar graph also to compare the data with the whole. For example with the total number of students we can mark the boys and girls in two different colors in the same bar. It can be clearly explained with the following examples.

Example

      Maximum marks scored by the students of 4, 5 and 6th grade students in the subject math. 

             To draw the graph we take the students in the vertical axis and the grades in the horizontal axis. In this graph we have to use separate colors for both boys and girls in the same bar.Now let us draw the graph.

                       Some times composite graph is also called as Stacked graph which means a graph which is useful in comparing the parts to the whole.

                      

                      We have discussed all types of graphs in this page 'Bar graph2'. Parents and teachers guide the students to understand how to draw the graphs. Students can draw the graph on their own. If you are having any doubts you can contact us through mail, we will clear all your doubts. 





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