Descriptive statistics focuses on a smaller group in which the entire selection is studied. The interview is conducted across the board and the data is carefully collected and analysed for that particular group of people.
It is not representative of a larger population and its purpose is to cater to the needs of the given group. Statistical tools such as chi-square are often used in descriptive statistics.
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These statistics deal with a large population and the results are supposed to be representative at a greater scale. The people that are selected for interviews are selected through various sampling techniques.
The result can vary from area to area and across different demographics. The results are often obtained using testing of a hypothesis and other advanced techniques. This kind of work is often done for policy making and marketing research for various large organisations.
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