Statistics

• It was first used by Prof. Gottfried Achenwall (1719-1772), a professor in Marlborough in 1...}
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Census and Sampling

1. Census method is the method where the information are collected from every individual relat...}
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Collection and Organization of Data

Methods of collecting Primary Data

1. Direct personal investigation
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Measures of Dispersion

1. Dispersion is the variation of a central value.
2. Range is the first measure of...}
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