ACARA AC9M8ST03, Sample size and variation
Year 8 · Statistics
Compare distributions and proportions from equal-sized random samples and describe how sample size affects the variation.
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Teaching guide
Compare distributions and proportions from equal-sized random samples and describe how sample size affects the variation.
Draw several equal-sized random samples from one population, compare their proportions, then increase the sample size and watch the variation settle down.
Expecting each sample to match the population exactly, and confusing sampling variation with a real change in the population.
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