Descriptive
Statistics deals with the process of identification of characteristics of
collected data. The data collected from many sources may be of different type.
You may like to arrange such data so that you may be able to draw logical
conclusions from it. You may use several techniques to describe characteristics
of data. These techniques may involve graphical representation of data,
measures of finding central tendencies of data and summarisation of data by
finding the data dispersion and variability. Once the data has been described,
the next step would be to draw reliable conclusions using the sample data for
the entire population. This section elaborates use of some of the data
distributions that are used in statistical analysis – t, chi-square and F
distributions. This section also deals with hypothesis testing and test of
significance. You are advised to go through BCS-040/ Block1 and 2, before going
through this unit.
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