统计学Fall

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统计学Fall11SlideSlide
统计学Fall 2004
授课教师:统计系余清
日期:2004 12月7日
第十二周:区间估计
22SlideSlide
Chapter 8Chapter 8
Interval EstimationInterval Estimation
ooInterval Estimation of a Population Mean: LargeInterval Estimation of a Population Mean: Large--Sample CaseSample Case
ooInterval Estimation of a Population Mean: SmallInterval Estimation of a Population Mean: Small--Sample CaseSample Case
ooDetermining the Sample SizeDetermining the Sample Size
ooInterval Estimation of a Population ProportionInterval Estimation of a Population Proportion
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33SlideSlide
Interval Estimation of a Population Mean:Interval Estimation of a Population Mean:
LargeLarge--Sample CaseSample Case
ooSampling ErrorSampling Error
ooProbability Statements about the Sampling ErrorProbability Statements about the Sampling Error
ooConstructing an Interval Estimate:Constructing an Interval Estimate:
LargeLarge--Sample Case with Sample Case with σσ KnownKnown
ooCalculating an Interval Estimate:Calculating an Interval Estimate:
LargeLarge--Sample Case with Sample Case with σσ UnknownUnknown
44SlideSlide
Sampling ErrorSampling Error
ooThe absolute value of the difference between an The absolute value of the difference between an
unbiased point estimate and the population unbiased point estimate and the population
parameter it estimates is called the parameter it estimates is called the sampling errorsampling error..
ooFor the case of a sample mean estimating a For the case of a sample mean estimating a
population mean, the sampling error ispopulation mean, the sampling error is
Sampling Error =Sampling Error =||x
55SlideSlide
Probability StatementsProbability Statements
About the Sampling ErrorAbout the Sampling Error
ooKnowledge of the sampling distri ·上一篇：项目编号
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