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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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334 CSDESCRIPTIVES<br />

• For example, /RATIO NUMERATOR = N1 N2 DENOMINATOR = D1 D2 yields the following<br />

ordered list of ratios: N1/D1, N1/D2, N2/D1, N2/D2.<br />

• Multiple RATIO subcommands are allowed. Each subcommand is treated independently.<br />

• Variables specified on the RATIO subcommand do not need to be specified on the SUM-<br />

MARY subcommand.<br />

• All specified variables must be numeric.<br />

• Within each variable list, all specified variables must be unique.<br />

• Plan file and subpopulation variables may not be specified on the RATIO subcommand.<br />

The TTEST keyword requests t tests of the population ratio(s) and gives the null hypothesis<br />

value(s). If subpopulations are defined on the SUBPOP subcommand, then null hypothesis<br />

values are used in the test(s) for each subpopulation as well as for the entire population.<br />

value The null hypothesis is that the population ratio equals the specified value for<br />

all t tests.<br />

valuelist This list gives the null hypothesis value of the population ratio for each ratio<br />

specified on the RATIO subcommand. The number and order of values must<br />

correspond to the ratios defined on the RATIO subcommand.<br />

STATISTICS Subcommand<br />

Commas or spaces must be used to separate the values.<br />

The STATISTICS subcommand requests various statistics associated with the mean, sum, or<br />

ratio estimates. If the STATISTICS subcommand is not specified, then the standard error is<br />

computed for any displayed estimates. If the STATISTICS subcommand is specified, then<br />

only statistics that are requested are computed.<br />

COUNT The number of valid observations in the data set for each mean, sum, or ratio<br />

estimate.<br />

POPSIZE The population size for each mean, sum, or ratio estimate.<br />

SE The standard error for each mean, sum, or ratio estimate. This is default output<br />

if the STATISTICS subcommand is not specified.<br />

CV Coefficient of variation.<br />

DEFF Design effect.<br />

DEFFSQRT Square root of the design effect.<br />

CIN [(value)] Confidence interval. If the CIN keyword is specified alone, then the default<br />

95% confidence interval is computed. Optionally, CIN may be followed by<br />

a value in parentheses, where 0 ≤ value < 100.<br />

SUBPOP Subcommand<br />

The SUBPOP subcommand specifies subpopulations for which analyses are to be performed.

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