How To Use Stratified sampling In A Sentence

• Methods: With stratified sampling and cluster sampling, we investigate 487 families in poverty.
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• The paper compares the three kinds of methods and, according to the characteristics of watt-hour meter in use stratified sampling, considers Neyman allocation as the appropriate method.
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• During future-spot arbitrage analysis, two different types of index replication method including industry stratified sampling and ETF portfolio replication are investigated.
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