IBM Water System SPSS COMPLEX SAMPLES 19 Instrukcja Użytkownika Pobierz pdf (Strona 29)

Sampling from a Complex Design

Sampling Wizard: Draw Sam ple Output Files

Figure 2-9

Sampling Wizard, Draw Sample Output Files step

This step allows you to choose where to direct sampled cases, weight variables, joint probabilities,

and case selection rules.

Sample data. These options let you determine where sample output is written. It can be added to

the active dataset, written to a new dataset, or saved to an external IBM® SPSS® Statistics data

ﬁle. Datasets are available during the current session but are not available in subsequent sessions

unless you explicitly save them as data ﬁles. Dataset names must adhere to variable naming rules.

If an external ﬁle or new dataset is speciﬁed, the sampling output variables and variables in the

active dataset for the selected cases are written.

Joint probabilities. These options let you determine where joint probabilities are written. They are

saved to an external SPSS Statistics data ﬁle. Joint probabilities are produced if the PPS WOR,

PPS Brewer, PPS Sampford, or PPS Murthy method is selected and WR estimation is not speciﬁed.

Case selection rules. If you are constructing your sample one stage at a time, you may want to

save the case selection rules to a text ﬁle. They are useful for constructing the subframe for

subsequent stages.

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IBM Water System SPSS COMPLEX SAMPLES 19 Instrukcja Użytkownika Strona 29