What are sampling methods? In a statistical study, sampling methods refer to how we select members from the population to be in the study. If a sample isn't randomly selected, it will probably be biased …

What are sampling methods? In a statistical study, sampling methods refer to how we select members from the population to be in the study. If a sample isn't randomly selected, it will probably be biased …

Practice identifying which sampling method was used in statistical studies, and why it might make sense to use one sampling method over another.

Practice identifying which sampling method was used in statistical studies, and why it might make sense to use one sampling method over another.

Every good investigation begins with a good question! Learn how to form questions and gather data to explore those questions. You'll also learn about some investigative techniques, including sampling, …

Now we have three methods by which he can do it. Let's just think about whether each of these methods are fair, where each kid does have the same chance of getting chosen.

Once divided, each subgroup is randomly sampled using another probability sampling method. In the clustering method, the clusters are assumed to already have a random, unbiased selection of …

Jillian wants to know what percent of students at her school watch sports on TV. Which strategy for sampling will be more likely to produce a representative sample?

Statistics is all about forming questions and gathering data to explore those questions. This unit connects these questions to aspects of research design, including sampling and survey methods, …

Learn statistics and probability—everything you'd want to know about descriptive and inferential statistics.