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This AP Statistics study guide covers study design, focusing on planning studies (defining populations vs. samples, and census), observational studies vs. experiments (retrospective and prospective), sample surveys, and confounding. It emphasizes the importance of random sampling to reduce bias and ensure generalizability. The guide also includes practice questions and tips for the AP exam.
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Question 1 of 9
A researcher wants to know the average height of all students in a high school. They measure the height of 100 randomly selected students. In this scenario, what does the 100 students represent? 🤔
The population
A census
A sample
A confounding variable