Using the Wizard to Sample from the First Partial Frame

  1. To run the Complex Samples Sampling Wizard, from the menus choose:

    Analyze > Complex Samples > Select a Sample...

    Figure 1. Sampling Wizard, Welcome step
    The Complex Samples Sampling Wizard Welcome Step.
  2. In the Welcome step, select Design a sample, browse to where you want to save the file, and type demo.csplan as the name of the plan file.
  3. Click Next.
    Figure 2. Sampling Wizard, Design Variables step (stage 1)
    The Complex Samples Sampling Wizard Design Variables Step.
  4. In the Design Variables step, select Region as a stratification variable.
  5. Select Province as a cluster variable.
  6. Click Next, and then click Next in the Sampling Method step.

    This design structure means that independent samples are drawn for each region. In this stage, provinces are drawn as the primary sampling unit using the default method, simple random sampling.

    Figure 3. Sampling Wizard, Sample Size step (stage 1)
    The Complex Samples Sampling Wizard Sample Size Step.
  7. In the Sample Size step, select Counts from the Units drop-down list.
  8. Type 3 in the Value field. This is the number of units to select in this stage.
  9. Click Next, and then click Next in the Output Variables step.
    Figure 4. Sampling Wizard, Plan Summary step (stage 1)
    The Complex Samples Sampling Wizard Stage Summary Step
  10. In the Plan Summary step, select Yes, add stage 2 now.
  11. Click Next.
    Figure 5. Sampling Wizard, Design Variables step (stage 2)
    The Complex Samples Sampling Wizard Design Variables Step
  12. In the Design Variables step for stage 2, select District as a stratification variable.
  13. Select City as a cluster variable.
  14. Click Next, and then click Next in the Sampling Method step.

    This design structure means that independent samples are drawn for each district. In this stage, cities are drawn as the primary sampling unit using the default method, simple random sampling.

    Figure 6. Sampling Wizard, Sample Size step (stage 2)
    The Complex Samples Sampling Wizard Sample Size step.
  15. In the Sample Size step for stage 2, select Proportions from the Units drop-down list.
  16. Type 0.1 in the Value field. This is the proportion of units to sample from each strata.
  17. Click Next, and then click Next in the Output Variables step.
    Figure 7. Sampling Wizard, Plan Summary step (stage 2)
    The Complex Samples Sampling Wizard Stage Summary Step.
  18. In the Plan Summary step for stage 2, select Yes, add stage 3 now.
  19. Click Next.
    Figure 8. Sampling Wizard, Design Variables step (stage 3)
    The Complex Samples Sampling Wizard Design Variables Step.
  20. In the Design Variables step for stage 3, select Subdivision as a stratification variable.
  21. Click Next, and then click Next in the Sampling Method step.

    This design structure means that independent samples are drawn for each subdivision. In this stage, household units are drawn as the primary sampling unit using the default method, simple random sampling.

    Figure 9. Sampling Wizard, Sample Size step (stage 3)
    The Complex Samples Sampling Wizard Sample Size Step.
  22. In the Sample Size step for stage 3, select Proportions from the Units drop-down list.
  23. Type 0.2 in the Value field. This is the proportion of units to select in this stage.
  24. Click Next, and then click Next in the Output Variables step.
    Figure 10. Sampling Wizard, Plan Summary step (stage 3)
    The Complex Samples Sampling Wizard Stage Summary Step.
  25. Click Next in the Plan Summary step.
    Figure 11. Sampling Wizard, Draw Sample Selection Options step
    The Complex Samples Sampling Wizard Draw Sample: Selection Options Step
  26. In the Draw Sample Selection Options step, select 1, 2 as the stages to sample now.
  27. Select Custom value for the type of random seed to use, and type 241972 as the value.

    Using a custom value allows you to replicate the results of this example exactly.

  28. Click Next, and then click Next in the Draw Sample Output Files step.
    Figure 12. Sampling Wizard, Finish step
    The Complex Samples Sampling Wizard Finish Step
  29. Click Finish.

These selections produce the sampling plan file demo.csplan and draw a sample according to the first two stages of that plan.

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