write down the demerits and merits of diagramatic representation?

Importance or utility of Diagrams

• Diagrams give a very clear picture of data. Even a layman can understand it very easily and in a short time.
• We can make comparison between different samples very easily. We don't have to use any statistical technique further to compare.
• This technique can be used universally at any place and at any time. This technique is used almost in all the subjects and other various fields.
• Diagrams have impressive value also. Tabulated data has not much impression as compared to Diagrams. A common man is impressed easily by good diagrams.
• This technique can be used for numerical type of statistical analysis, e.g. to locate Mean, Mode, Median or other statistical values.
• It does not save only time and energy but also is economical. Not much money is needed to prepare even good diagrams.
• These give us much more information as compared to tabulation. Technique of tabulation has its own limits.
• This data is easily remembered. Diagrams which we see leave their lasting impression much more than other data techniques.
• Data can be condensed with diagrams. A simple diagram can present what even cannot be presented by 10000 words.