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BASIC CONCEPT OF STATISTICS

Dr.Mosfudar Rahaman

Assistant Professor

Malda College, Malda

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Concept of Data

The Latin word data is the plural of datum, "(thing) given," neuter past participle of dare "to give".

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Data can be defined as a systematic record of a particular quantity

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Types of Data

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Parameter

A parameter is a useful component of statistical analysis. It refers to the characteristics that are used to define a given population.

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Variables

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The characteristics whose values vary from one observation to another observation are known as variables. Form example rainfall is a variables because it varies from point to point.

A variable may also be called a data item. Age, sex, business income and expenses, country of birth, capital expenditure, class grades, eye colour and vehicle type are examples of variables.

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Sampling

Sampling is a process used in statistical analysis in which a predetermined number of observations are taken from a larger population.

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