Wednesday, June 30

Common Data Representation

Introduction to Common Data Representation:


Representing a Numerical Data:
             A numerical data is a set of mathematical values which is used for measuring and counting and it can be represented by graphs(Pie-chart, bar graph). A numerical value is generally used for scaling purposes i.e. to find out the range, value ,mean and count of a particular object. We can even represent the data on number line based on the values. Depending on values we can represent data in statistical tables and can give ranks to the data, we can even find frequency distribution.
We can represent the Data by:
Pie Chart:

     Pie chart is a representation on a circle. Therefore its also known as "circle graph". The circle is divided into different partition depending on Category. It is one of the most common graphs for describing a set of measurements. It is the best graphical display for displaying data arranged in categories. Each category is represented by a wedge of the pie and the size of each wedge is in proportion to the percentage of each category.

Bar Graph:

     A bar graph consist two axes and a series of horizontal bars or vertical bars which are placed in the x ,y plane,depending on the value. It is another way of displaying qualitative data.The frequencies along the vertical axis (ordinate) of the chart and the categories on the horizontal axis of the chart(abscissa). Bar chart is used to display frequency and percentages.
Hope you liked the above explanation. Please leave your comments, if you have any doubts.

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