A graph is usually a drawing or a chart, which shows the relationship
between changing things. People also refer graph as a diagram showing
the relationship between amounts or numbers. Usual graphs make use
of lines, bars, or parts of a circle to show the data.
In other words, a graph represents facts in an apparent manner.
It is a kind of diagram, which shows the comparative size of statistical
quantities. Hence, a graph is termed the simplest method to compare
numbers.
You can use graphs to show several types of data, because they are
not just restricted to the simpler types as such circle, bar, and
line graphs. You can liberally use graphs to make facts more apparent
and logical.
Importance of Graphs to have a Clear Idea:
Graphs are undoubtedly a handy way to depict your data in an apparent
manner. You just need to make sure the way to display your results
with correct graph form. You can take advice from your respective
math teacher too.
The x and y axes on bar and line graphs ought to be correctly labeled
with appropriate units of measure. You can use metric units to label
these axes. The line, bar, and circle graph depicts different types
of data and below mentioned is a general description of these graphs:
Bar Graph:
You can use bar graphs to display the relationship among groups.
Any two items that you will be comparing need not necessarily influence
each other in any way. It is also a quickest way to display huge difference.
Line Graph:
You can use line graphs to depict continuing data, for how one thing
is influenced by the other. You can clearly see how things are progressing
by the fluctuations shown in line graph. Such types of graphs are
necessary to display the consequence of independent variables on dependent
variables. For example, pulse rate of a person is clearly viewable
in a line graph. Since, the time continues and the pulse rate keeps
on changing.
Circle or (Pie) Graph:
A pie graph or circle graph will help you to display a part of something
that relates to the whole. Usually, circle graphs are a key way to
show percentages efficiently.
Points to be Remember:
Below mentioned are certain reminders, which you need to carry in
mind while working on graphs:
1. First, try to perform all the measurements perfectly and constantly
with the use of metrics, wherever applicable.
2. Try to make diagrams or sketch of different forms of your project,
and try to take photographs too.
3. Do not to get dispirited, work attentively and try to repeat the
project, if necessary.
4. Try to organize measurements and observations in charts or tables
in a clearly labeled manner.
5. Finally, keep a daily record sheet or log book to keep track of
problems, modifications, measurements, and calculations of graphs
over time.
Area Graph:
You can use area graphs to display things, which change over time.
These graphs have an x-axis (horizontal) and a y-axis (vertical).
Generally, the x-axis denotes the time scale, whereas the y-axis denotes
what you are measuring.
You can use area graphs specifically, when you think to plot data
that has ups (peaks) and downs (valleys) or for data collected over
a short period.
One real example of area graph would be the graph required to show
percentage of high school graduates, who have completed advanced English
courses over a period.
Some graphs are easy to understand, while some are a bit complicated.
You have to be a bit careful while you work on graphs, as there are
several types of graphs with each one having moderate and definite
use.