Questions about sampling and experimentation represent just 10% to 15% of the AP statistics multiple choice questions.
The main sampling and experimentation topics are:
-Overview of methods of data collection: census, surveys, experiments, observational studies;
-Planning and conducting surveys: characteristics, populations, samples, random selection, sources of bias, simple random sampling, stratified random sampling and cluster sampling;
-Planning and conducting experiments: characteristics, treatments, control groups, random assignments, replication, sources of bias and confounding, placebo effect, blinding, randomized design, matched pairs design;
Examples of sampling and experimentation AP Statistics multiple choice questions:1. A nutritional consulting company is trying to find what percentage of the population of a town is overweight. The marketing department of the company contacts by telephone 600 people from a list of the entire town's population. All 100 people give answers to the survey. Which of the following is the most significant source of bias in this survey?