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SPSS® 12.0 Command Syntax Reference

SPSS® 12.0 Command Syntax Reference

SPSS® 12.0 Command Syntax Reference

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Stratified sample design<br />

CSPLAN SAMPLE<br />

/PLAN FILE=’c:\survey\myfile.csplan’<br />

/DESIGN STRATA=region<br />

/METHOD TYPE=SIMPLE_WOR<br />

/RATE MATRIX=REGION; ‘East’ 0.1 ; ‘West’ 0.2;<br />

‘North’ 0.1; ‘South’ 0.3.<br />

CSPLAN 353<br />

• A stratified sample design is specified with disproportionate sampling rates for the strata.<br />

Sample elements will be drawn independently within each region.<br />

• The extraction method is simple random sampling without replacement.<br />

• CSPLAN generates a default analysis design using region as a stratification variable and<br />

the EQUAL_WOR estimator.<br />

Stratified cluster sample design<br />

CSPLAN SAMPLE<br />

/PLAN FILE=’c:\survey\myfile.csplan’<br />

/DESIGN STRATA=region CLUSTER=school<br />

/METHOD TYPE=PPS_WOR<br />

/SIZE VALUE=10<br />

/MOS VARIABLE=mysizevar.<br />

• A stratified cluster sample design is specified.<br />

• Ten schools will be selected within each region with probability proportionate to size.<br />

• Size values for the strata are read from mysizevar.<br />

• CSPLAN generates a default analysis design using region as a stratification variable and<br />

school as a cluster variable.<br />

• The UNEQUAL_WOR estimator will be used for analysis. UNEQUAL_WOR is the default<br />

when units are sampled with probability proportionate to size.<br />

Multistage cluster sample design<br />

CSPLAN SAMPLE<br />

/PLAN FILE=’c:\survey\myfile.csplan’<br />

/DESIGN STAGELABEL=’school districts’ CLUSTER=district<br />

/METHOD TYPE=PPS_WOR<br />

/RATE VALUE=.2<br />

/MOS VARIABLE=districtsize<br />

/DESIGN STAGELABEL=’schools’ CLUSTER=school<br />

/METHOD TYPE=SIMPLE_WOR<br />

/RATE VALUE=0.3.<br />

• A multistage cluster sample design is specified.<br />

• Twenty percent of school districts will be drawn with probability proportionate to size.<br />

• Within each selected school district 30% of schools will be drawn without replacement.

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