Bar Graph

Have you ever worked on graphs? I am sure you would have seen different kinds of bars, circle, line etc. Lets us start working on them. The topic i have for you is on Bar Graph. It is a very interesting topic among many different types of graphs to work on.

Definition of a Bar Graph:- A bar chart or bar graph is a chart with rectangular bars with lengths proportional to the values that they represent. The bars can also be plotted horizontally. Bar graph can be either vertical or horizontal.

Things to remember while creating a Bar Graph:-

There are a few things which you need to keep in mind while you create a Bar Graph such as
the title of the graph, both the axes, including the labels of axes, the scale, and the bars. Bar graphs are used to graph frequencies or amounts of data in discrete groups, we will need to determine which axis is the group for data axis, as well as what are the specific groups , and which is the frequency axis.

Below is an example for Bar Graph.

Example 1:

The results for last year high school math grades have been calculated. How many more 9^th graders made A’s in math than 11^th graders?

Solution:

Step1: Looking under the category of A’s, locate the graph for 8^th graders. The interval on the left side of the bar graph reads 75 at the highest points on the graph for 8^th graders. That means 75 8^th graders made an A in math class.

Step 2: Now do the same thing in step 1 again except the time instead of looking at the graph for 8^th graders. We look at the graph for 10^th graders. The interval on the left side of the bar graph reads 50 at the highest point on the graph for 10^th graders. That means 50 10^th graders made an A in math class.

Step 3: Subtract the 50 10^th graders from the 75 8^th graders. There is an excess of 25 students. This means that 25 more 8^th graders made on A in math than 10^th graders.

Simple three steps, use your own examples and create a Bar graph. Keep reading my post and let me know your views.