1. (a) Discuss the merits and Imitations of representing statistical data through graphs and diagrams. How do you represent data by means of a pie diagram?
(b) Find out the role of diagrammatic presentation of data Explain briefly the different types of bar diagrams known to you .
4. (a) "Cliarts and graphs are more effective in attracting attention than any of the other methods of presenting data." Do you agree? Give reasons in support of your answer.
(b) What are the different methods of a graphical presentation of data? Explain them.