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Chapter 5, 5.6: Stratified Random Sampling: Estimating a Population Proportion

Chapter 5, 5.6: Stratified Random Sampling: Estimating a Population Proportion. Stratified Random Sampling: Estimate of Proportion p. 5.7 Approx. Sample Size to Estimate p. Worksheet 13. 5.7 Allocation of the Sample. Objective : obtain estimators with small variance at lowest cost.

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Chapter 5, 5.6: Stratified Random Sampling: Estimating a Population Proportion

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  1. Chapter 5, 5.6: StratifiedRandom Sampling: Estimatinga Population Proportion

  2. Stratified Random Sampling: Estimate of Proportion p

  3. 5.7 Approx. Sample Size to Estimate p Worksheet 13

  4. 5.7 Allocation of the Sample • Objective: obtain estimators with small variance at lowest cost. • Allocation affected by 3 factors: • Total number of elements in each stratum • Variability in each stratum • Cost per observation in each stratum

  5. Directly proportional to stratum size and stratum variability Inversely proportional to stratum cost/obs

  6. Worksheet 14

  7. Worksheet 14

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