The usual and effective means in this context are: graphs, charts, pictures, etc. and they are really and surely capable of depicting some important features of the data which they individually are not able to exhibit. Selection of the appropriate diagram actually depends on the nature of the raw data available and the purpose or the area in which it will be applied. However, only certain limited information can be supplied through a particular diagram and as such each diagram has certain specific limitations of its own. A few commonly used diagrams applied on different occasions in various disciplines today are the line diagram, bar diagram, ogive, pie diagram and the pictogram (as prescribed in the syllabus). It may be noted that diagrammatic representations of statistical information is appealing to the eyes. Hidden facts may also be detected once such information are presented graphically. Further, graphs of statistical data clearly bring out the relative importance of different figures, the trend or tendency of the values of the variables involved can be studied too.