Graphical Representation of Data: Part 1
(Diagrammatic Data Representation: Line Chart, Bar Diagrams and Histogram)
Graphical Representation of Data / Variables
Ø The data presentation in statistics may be Numerical or Graphical.
Ø If the data is presented in the numerical form, it will not attract the attention of the audience.
Ø In order to attract the attention of the audience, Graphical Representation method is usually adopted.
Ø Graphical Representation: It is the representation or presentation of data as Diagrams and Graphs.
Ø The statistical graphs were first invented by William Playfair in 1786.
Ø In graphical data representation, the Frequency Distribution Table is represented in a Graph.
Advantages of Graphical Representation of Data
Ø Data are presented pictorially.
Ø Give better insight and understanding of the data.