# Ch 7: Sampling

Watch online video lessons and learn about random samples, the law of large numbers, the central limit theorem and more. Take the quizzes that follow each lesson to gauge your progress.

## Sampling - Chapter Summary and Learning Objectives

In this chapter's video lessons, instructors illustrate the use of sampling to get a representative measure of an entire population. Let them introduce you to the different types of sampling methods and show you how to find a sampling distribution's mean and standard error. By the time you finish this chapter, you should be familiar with the following:

• Simple, stratified, cluster and systematic random samples
• The law of large numbers and central limit theorem
• Sampling distribution, standard error and the sample mean

Video Objectives
What is Random Sampling? - Definition, Conditions & Measures Understand what conditions must be met for a sample to be random.
Simple Random Samples: Definition & Examples Learn how to select or recognize a simple random sample.
Stratified Random Samples: Definition, Characteristics & Examples Explain methods for selecting or recognizing a stratified random sample.
Cluster Random Samples: Definition, Selection & Examples Find out how to select or recognize a cluster random sample.
Systematic Random Samples: Definition, Formula & Advantages Understand the steps involved in selecting or recognizing a systematic random sample.
Understanding the Law of Large Numbers Examine the law of large numbers as it relates to probability theory.
Sampling Distributions & the Central Limit Theorem: Definition, Formula & Examples Discover what a sampling distribution is and explore the central limit theorem.
Find the Mean & Standard Error of the Sampling Distribution Determine the mean and standard error for the sampling distribution of the sample mean.
Finding Probabilities About Means Using the Central Limit Theorem Find probabilities for a sample mean using normal distributions and the central limit theorem.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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