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What are the differences between description and inference

What are the differences between description and inference
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Descriptive Statistics: It shows a numerical description of data and summary statistics of data under study. Example of some description: Population mean, population variance, sample mean etc are part of descriptive summary of data.

Inferential Statistic: In this branch, the descriptive statistics measures are used to make inference about population from which sample is taken. There are various test for different situation to make inference. For example: t test, z test etc

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