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10 cards from this deck
A distinct subgroup within your population.
Add all values in the two-way table.
Proportion = Size of stratum / Total population size.
Sample size = (Stratum proportion) × (Total sample size)
Consider increasing the sample size for better accuracy.
They divide the population into distinct, non-overlapping groups.
Population size, margin of error, and confidence level.
Sample size = (stratum size/total population) x total sample size.
Match sample proportions to those in the population.
Sample size = 9 (rounded from 8.82).
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