Explain the reading and interpretation of bar graphs.

Hint:
Here, we have to use the concept of a bar graph to read and interpret the data. Bar graph is the graph in which the data is plotted using the rectangular bars of different heights for different parameters so that it becomes very easy to compare the data.

Complete step by step solution:
A bar graph is the graph in which the data is plotted using the rectangular bars of different heights for different parameters.

So, to read the data from the graph firstly we have to know what is represented on the x-axis and y-axis.
It is generally written on the side of each axis that what is represented on that particular axis.
So, by this we get to know what the x-axis represent and y-axis represent. Now, we have to see the corresponding values of different parameters for its comparison.
Now, interpretation of the graph means concluding some results from the data given in the graph.
So, after reading the data from the graph we can easily interpret the data and draw some conclusions from it.

Note:
There are two most commonly used graphs i.e. line graphs, bar graphs.
Line graph is the graph in which points are projected in the graph and straight lines are made to join those points and it gives us the picture of variation of that particular data.
Bar graph is the graph in which the data is plotted using the rectangular bars of different heights for different parameters so that it becomes very easy to compare the data. Interpretation of the graph means concluding some results from the data given in the graph.