Statistics
Activity:
Sampling
Posted on Apr 24, 2008
Topic: Sampling
In this activity, students learn about each of the four types of probability sampling methods and use the randInt command to find each kind of sample from a given population. For stratified sampling, students find both a proportionate and a disproportionate sample.
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Activity Key Steps:
Students explore random sampling in problem 1. They discuss populations, samples, and what it means for a sample to be representative of the population.
Students move on and learn four types of probability samples. Students further investigate by randomly selecting 8 people for a sample.
Students discuss a stratified random sample, often just called a stratified sample.
Students find a random sample of 12 people from a list, where half are men and half are women. They use randint(1,10) until they have six women and then randint(11, 30) until they have six men.
At the end of this activity, students distinguish between the types of probability sampling methods.