Data Handling

•Bar graph is the simplest form of representing data by displaying rectangular bars of different heights proportional to the value they represent. 

•Bar graph can also be referred as bar chart, column graph, and column chart.

•The bars can be plotted vertically or horizontally.

• Bar graph makes comparison easier. The title of the bar graph tells what the graph is about and bars of different height tell the facts or information.

• Each bar represents a quantity for a particular group.

•Representing numerical data by dividing a circle into slices or sectors is called pie chart or pie graph or circle graph.

• Each sector in pie chart represents a fraction of whole. 

•It is simple to understand as it summarizes a large data in  visual form.