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Double Sample to Minimize Bias Due to Non-response in a Mail Survey
Random sample Sample design Sample surveys Sampling Statistical methods Statistics Survey Data
2014/3/31
A large study of nurses conducted in the U.S. states of California (CA) and Pennsylvania (PA) is based on two large samples: n^CA≈100,000 and n^PA≈65,000. The study was conducted by mail and had respo...