IBM Water System SPSS COMPLEX SAMPLES 19 Manual de usuario Pagina 149

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135
Complex Samples Sampling Wizard
Plan Summary
Figure 13-43
Plan summary
The summa
ry table reviews your sampling plan and is useful for making sure that the plan
represents your intentions.
Samplin
gSummary
Figure 13-44
Stage summary
This summary table reviews the rst stage of sampling and is useful for checking that the sampling
went according to plan. Recall that you requested a 30% sample of townships by county; the
actual proportions sampled are close to 30%, except in the Western and Southern counties. This is
because these counties each have only six townships, and you also specied that a minimum of
three townships should be selected per county.
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