2. Need And Importance of Graphical
Representation of Data
• A graphic representation is the
geometrical image of a set of data. It is a
mathematical picture . It enables as to think
about a statistical problem in visual terms .
The graphic representation of data proves
quite and effective and an economic device
for the presentation , understanding and
interpretation of the collected statistical data .
3. Graphical Representation Of Data :
Need And Importance
It permits easy visualization
The data can be easily understood just by a
glance over the graph.
It helps in observing the data with
concentration .
It facilitates comparative study of different
aspects of a given data .
Graphs help a great deal in the analysis of the
data .
4. Advantages Of Graphical
Representation Of Data
It provides a more lasting effect on the brain
The data can be presented in a more
attractive and an appealing form .
Comparative analysis and interpretation may
be effectively and easily made .
Various valuable statistics like median , mode ,
quartiles may be easily computed .
5. Limitations Of Graphical
Representation Of Data
Presentation of graphs is time consuming
Its facility for comparative study is limited
Measures from the graphs will not be accurate
The conclusions draw from the graph will not
be precise
