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Summer/May 2012 MB0050-3. What is frequency Distribution? What are the types and general rules for graphical representation of data?

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1 comment:

  1. Role of Graphs:

    Because graphs provide a compact, rhetorically powerful way of representing research findings, recent theories of science have postulated their use as a distinguishing feature of science. Studies have shown that the use of graphs in journal articles correlates highly with the hardness of scientific fields, both across disciplines and across subfields of psychology.

    Role of Diagrams:

    Recent technological advances have enabled the large-scale adoption of diagrams in a diverse range of areas. Increasingly sophisticated visual representations are emerging and, to enable effective communication, insight is required into how diagrams are used and when they are appropriate for use. The pervasive, everyday use of diagrams for communicating information and ideas serves to illustrate the importance of providing a sound understanding of the role that diagrams can, and do, play. Research in the field of diagrams aims to improve our understanding of the role of diagrams, sketches and other visualizations in communication, computation, cognition, creative thought, and problem solving. These concerns have triggered surge of interest in the study of diagrams. The study of diagrammatic communication as a whole must be pursued as an interdisciplinary endeavor. Diagrams attract a large number of researchers from virtually all related fields, placing the conference as a major international event in the area.



    b) Types and General rules for graphical representation of data:

    Graphical representation is done of the data available. This is very important step of statistical analysis. We will be discussing the organization of data. The word ‘Data’ is plural for ‘datum’; datum means facts. Statistically the term is used for numerical facts such as measures of height, weight and scores on achievement and intelligence tests. Graphs and diagram leave a lasting impression on the mind and make intelligible and easily understandable the salient features of the data. Forecasting also becomes easier with the help of graph. Thus it is of interest to study the graphical representation of data. The graphical representation of data is categorized as basic five types:

    1) Bar graph

    2) Pie graph

    3) Line graph

    4) Scatter plot

    5) Histogram

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