8 Sampling and Sampling Distributions

Overview

Why Sample?

Methods of Sampling

Using JMP to Select a Simple Random Sample

Variability Across Samples: Sampling Distributions

Sampling Distribution of the Sample Proportion

From Simulation to Generalization

Sampling Distribution of the Sample Mean

The Central Limit Theorem

Stratification, Clustering, and Complex Sampling (optional)

Application

Overview

Although current technology makes it possible to analyze population-level data nearly in real time, a great deal of statistical analysis begins with carefully selected samples from a population. The use of sample data introduces a layer of uncertainty for analysts who need to make conclusions about the parent population. This chapter is devoted to ...

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