Monday, May 24, 2010

Bar Graph

A bar graph is a graphical illustration of frequency distributions of ungrouped information. It is a pictorial demonstration of the arithmetical data by a number of bars of uniform width erected vertically with like spacing between them.

Bar charts are used for plotting discrete (or 'discontinuous') data i.e. data which has discrete values and is not continuous. Some examples of discontinuous data include 'shoe size' or 'eye color', for which you would use a bar chart. In contrast, some examples of continuous data would be 'height' or 'weight'. A bar chart is very useful if you are trying to record certain information whether it is continuous or not continuous data.

How to Draw a Bar Graph?????

Sounds hard but is very easy.

Three steps and we are there lets see......

Step 1: Draw horizontal and vertical axes on the graph paper.
Step 2: Take one set of the data along x-axis and other set of data in y-axis.
Step 3: Now plot the bars using given data.

Lets try plotting some Bar Graphs using the below data.

An officer with a monthly salary of Rs. 10,000 plans his budget for a month as given below:


This Data can be represented by the below Bar Graph


Try some its easy..............................................

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