# Sampling

Learn about sampling and develop an understanding through practical demonstrations.

In this lesson, we begin the third portion of this course on statistical inference by learning about sampling. The concepts behind sampling form the basis of confidence intervals and hypothesis testing, We’ll see that the tools we’ve learned related to data visualization and data wrangling will also play an important role in the development of our understanding.

## Needed packages

Let’s load all the packages needed for the coming programs.

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