What is ‘data’ or ‘variable’? Ø Data is a set of values of qualitative or quantitative variables. Ø In biostatistics (also in statistics) data are the individual observations. Ø The scientific investigations involve observations on variables. Ø The observations made on these variables are obtained in the form of ‘data’. […]
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Biostatistics Introduction (Significance, Applications and Limitations of Statistics)
What is Statistics? Statistics is a branch of applied mathematics which deals with the collection, classification, analysis and interpretation of data. The word statistics is derived from the Latin word ‘status’ means a ‘political state’ or ‘government’. What is Biostatistics? Biostatistics is a branch of biological science which deals with […]
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Graphical Representation of Data (Frequency Polygon, Frequency Curve, Ogive and Pie Diagram)
This post is the continuation of the Previous Post (Graphical Representation of Data Part 1). (3). Frequency Polygon Ø The Frequency Polygon is a curve representing a frequency distribution. Ø In frequency polygon, the mid values of each class are first obtained. Ø In a graph paper, the frequency of […]
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Graphical Representation of Data (Line Graph, Bar Diagram & 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 […]
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Graphical Representation of Data 1: Tables and Tabulation with PPT
“Science is organized knowledge… Wisdom is organized life… Immanuel Kant What is Data or Variable? Ø Data or variables in biostatistics (statistics) are individual observations of a natural phenomenon or an experiment. Ø All scientific investigations involve observations on the variables. Ø Observations made on these variables are obtained in […]
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