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.

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, …

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

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

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?

A high school teacher working for the district believes that teacher job satisfaction varies greatly from school to school and wants to estimate the proportion of all teachers in the district who are satisfied …

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, …

All students at the high school are eligible to vote in the election, and the writer decides to select a sample of students to take the survey. Which of the following sampling methods is most likely to …

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