Graphical Representation of Data
Graphical Representation of Data
Chapter 3
☞ (Paste Examples of any graphs, diagrams and maps showing different types of data. For example, relief map, climatic map, distribution of soils maps, population map) REPRESENTATION OF DATA Besides the tabular form, the data may also be presented in some graphic or diagrammatic form. “The transformation of data through visual methods like graphs, diagrams, maps and charts is called representation of data.” The need of representing data graphically: Graphics, such as maps, graphs and diagrams, are used to represent large volume of data. They are necessary: • If the information is presented in tabular form or in a descriptive record, it becomes difficult to draw results. • Graphical form makes it possible to easily draw visual impressions of data. • The graphic method of the representation of data enhances our understanding. • It makes the comparisons easy. • Besides, such methods create an imprint on mind for a longer time. • It is a time consuming task to draw inferences about whatever is being presented in non–graphical form. • It presents characteristics in a simplified way. • These makes it easy to understand the patterns of population growth, distribution and the density, sex ratio, age–sex composition, occupational structure, etc. General Rules for Drawing Graphs, Diagrams and Maps 1. Selection of a Suitable Graphical Method Each characteristic of the data can only be suitably represented by an appropriate graphical method. For example, • To show the data related to the temperature or growth of population between different periods in time line graph are used. • Similarly, bar diagrams are used for showing rainfall or the production of commodities. • The population distribution, both human and livestock, or the distribution of the crop producing areas are shown by dot maps. • The population density can be shown by choropleth maps. Thus, it is necessary and important to select suitable graphical method to
Chapter 3
☞ (Paste Examples of any graphs, diagrams and maps showing different types of data. For example, relief map, climatic map, distribution of soils maps, population map) REPRESENTATION OF DATA Besides the tabular form, the data may also be presented in some graphic or diagrammatic form. “The transformation of data through visual methods like graphs, diagrams, maps and charts is called representation of data.” The need of representing data graphically: Graphics, such as maps, graphs and diagrams, are used to represent large volume of data. They are necessary: • If the information is presented in tabular form or in a descriptive record, it becomes difficult to draw results. • Graphical form makes it possible to easily draw visual impressions of data. • The graphic method of the representation of data enhances our understanding. • It makes the comparisons easy. • Besides, such methods create an imprint on mind for a longer time. • It is a time consuming task to draw inferences about whatever is being presented in non–graphical form. • It presents characteristics in a simplified way. • These makes it easy to understand the patterns of population growth, distribution and the density, sex ratio, age–sex composition, occupational structure, etc. General Rules for Drawing Graphs, Diagrams and Maps 1. Selection of a Suitable Graphical Method Each characteristic of the data can only be suitably represented by an appropriate graphical method. For example, • To show the data related to the temperature or growth of population between different periods in time line graph are used. • Similarly, bar diagrams are used for showing rainfall or the production of commodities. • The population distribution, both human and livestock, or the distribution of the crop producing areas are shown by dot maps. • The population density can be shown by choropleth maps. Thus, it is necessary and important to select suitable graphical method to