A circle is divided by several radii into sectors whose relative areas represent the relative magnitudes of quantities or the relative frequencies of items in a frequency distribution.The basic understanding of a Pie Chart is A pie chart (or a circle graph) is a circular chart divided into sectors, illustrating proportion. In a pie chart, the arc length of each sector (and consequently its central angle and area), is proportional to the quantity it represents. When angles are measured with 1 turn as unit then a number of percent is identified with the same number of centiturns. Together, the sectors create a full disk. It is named for its resemblance to a pie which has been sliced.
A pie chart is a tool that helps you visualized the relative importance of several diagrams... A histogram is a diagram which graphically depicts the variability in a process
These are best used with categorical data to help us see what percentage of the whole each category constitutes. These Pie charts require all categories to be included in a graph. Every graph always represents their entire segments.
Draw a pie chart to display the information.
Total weekly expenditure in house = 250 + 300 + $85
Find the percentage of total expenditure of each item
Fruits = (250 / 600)100% = 41.6%
Vegetable = (300 / 600) 100 = 50%
Oils = (85 / 600) 100 = 14.1%
If we draw the pie chart, divide the circle into hundred parts. Allocate the percentage parts require for each item.
A pie diagram can be used in various applications. For instance, this is mostly used in government to represent cities and the statistical information that relates to income, age, gender and race. A pie chart makes the information more easily and understood as a graphical representation of the statistics.
Hope you like the above example of Pie Chart.Please leave your comments, if you have any doubts.