Florida B.E.S.T. MA.912.DP.5.3
The Standard
Compare and contrast sampling methods.
Florida B.E.S.T. Standards for Mathematics
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students examine how people or items are selected from a population. They name the sampling method and judge whether it is likely to represent the population fairly.
What Mastery Looks Like
- Students can identify simple random, systematic, stratified, cluster, convenience, and voluntary response samples from a survey plan. They can explain how each method affects representation and bias.
Common Misconceptions
- Students may call any sample random because participants were chosen without much planning. They often confuse stratified sampling, which selects from every group, with cluster sampling, which selects whole groups.
How to Assess It
- Give students four survey plans and ask them to name each sampling method, identify likely bias, and choose the most representative plan.
Lesson moves
Ways to Teach It
Use colored counters as a population, then have groups collect random, systematic, stratified, cluster, and convenience samples and compare results.
Ask students to write which sampling method should estimate school lunch preferences and explain why two other methods may give biased results.
Play a sorting game with survey-plan cards, placing each under random, systematic, stratified, cluster, convenience, or voluntary response.
Compare how a news poll, customer receipt survey, and schoolwide survey select participants, then decide which results are most trustworthy.
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Related Standards
- MA.912.DP.5.4
Generate multiple samples or simulated samples of the same size to measure the variation in estimates or predictions.
- MA.912.DP.5.8
Draw inferences about two populations using data and statistical analysis from two random samples.
- MA.912.DP.5.9
Compare two treatments using data from an experiment in which the treatments are assigned randomly.
- MA.912.DP.5.7
Compare and contrast surveys, experiments and observational studies.
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