Here we will learn about the kinds of graphs and their uses. Graphs are important for interpreting large amounts of information into a way that is easy to understand them. We will get to know the tables, line graphs, bar graphs and the pie chart. When asked to draw a graph of some data, you should have a way of determining which graph is right for a certain data types:
Tables are basically, data arranged in rows and columns. They are quite difficult to interpret the data in tables because they have no visual ways of representing the data. It is more difficult to make comparisons and interpret the general direction which the data tends to.
Though they are quite hard to interpret, they are good for representing data as a whole.
2. Line Graphs:
This kind of graphs is used to display data that keeps altering over time. They give us an opportunity to see if the data tends to increase or decrease.
They are used mostly when the data being represented undergo small changes. They are also used for comparing different small changes in more than one set of data.
3. Bar Graphs:
Bar graphs are made up of bars which the bars are proportional to the data quantities they represent. They give us an ability to examine and note the similarities and differences of more than one array of data. Because of the way the facts are represented visually, it is easy to notice quickly the difference in data. They can sometimes be hard to read because the change in the scale used may alter the visual view of the data. In the instances where this kind of graph is used, it is best when the data changes in the graph are large. They are best for summarizing the details that have been given to the reader.
4. Pie Chart:
Pie chart is sometimes called Circle graphs. They are circles that are divided into triangular parts in order to represent an array of data as a whole. The area of a particular value in a pie chart represents the proportion of the data being represented as a percentage of the total data. Without a computer, it is quite hard to draw an accurate circle graph because many proportions may have to be calculated before figuring out the representing angles with a protractor. They are recommended for data for not more than six sectors.
They are mainly used to represent data as a whole. They have no ability of representing data changes over time.
When selecting the kind of graph to use to represent your data, think about the aim of the graph you are drawing and how the data is to be represented in the graph. You should avoid special effects from your graphs in order to clearly communicate important points. Have the title for each kind of graph you draw so that someone can easily have a clue of what the graph is all about. Also have your graph labeled