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

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5
Sampling from a Complex Design
E
Click Next to continue through the Wizard.
E Optionally, in the Design Variables step, you can dene strata, clusters, and input sample weights.
After you dene these, click
Next.
E Optionally, in the Sampling Method step, you can choose a method for selecting items.
If you select
PPS Brewer or PPS Mur thy, you can click Finish to draw the sample. Otherwise,
click Next and then:
E In the Sample Size step, specify the number or proportion of units to sample.
E You can now click Finish to draw the sample.
Optionally, in further steps you can:
Choose output variables to save.
Add a second or third stage to the design.
Set various selection options, including which stages to draw samples from, the random
number seed, and whether to treat user-missing values as valid values of design variables.
Choose where to save output data.
Paste your selections as command syntax.
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