Tracy Qi Dong1, Jon Wakefield2

  • 1Department of Biostatistics, University of Washington.

PubMed
概括

精确测量常规免疫覆盖率对于控制高负担国家的麻疹至关重要. 本研究引入了一个时空平滑模型,用复杂的调查数据来估计含麻疹疫苗第一剂量 (MCV1) 覆盖率.

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Estimating Population Mean with Unknown Standard Deviation01:22

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In practice, we rarely know the population standard deviation. In the past, when the sample size was large, this did not present a problem to statisticians. They used the sample standard deviation s as an estimate for σ and proceeded as before to calculate a confidence interval with close enough results. However, statisticians ran into problems when the sample size was small. A small sample size caused inaccuracies in the confidence interval.
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Estimating Population Mean with Known Standard Deviation01:16

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Estimating Population Standard Deviation01:26

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