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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What is Frequency Distribution?
In the previous post, we have discussed the concept of Tables and Tabulation of Variables in Statistics. Here we will discuss the concept of Statistical Tables better known as Frequency Distributions of Frequency Tables. Statistical Tables Ø There are different types of tables in statistics. Ø The most common type […]
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