# Complex Samples Ratios

The Complex Samples Ratios procedure displays univariate summary statistics for ratios of variables. Optionally, you can request statistics by subgroups, defined by one or more categorical variables.

**Example.** Using the Complex Samples Ratios procedure, you
can obtain descriptive statistics for the ratio of current property
value to last assessed value, based on the results of a statewide
survey carried out according to a complex design and with an appropriate
analysis plan for the data.

**Statistics.** The procedure produces ratio estimates, *t* tests,
standard errors, confidence intervals, coefficients of variation,
unweighted counts, population sizes, design effects, and square roots
of design effects.

Complex Samples Ratios Data Considerations

**Data.** Numerators and denominators should be positive-valued
scale variables. Subpopulation variables can be string or numeric
but should be categorical.

**Assumptions.** The cases in the data file represent a sample
from a complex design that should be analyzed according to the specifications
in the file selected in the Complex Samples Plan dialog box.

Obtaining Complex Samples Ratios

This feature requires the Complex Samples option.

- From the menus choose:
- Select a plan file. Optionally, select a custom joint probabilities file.
- Click Continue.
- In the Complex Samples Ratios dialog box, select at least one numerator variable and denominator variable.

Optionally, you can specify variables to define subgroups for which statistics are produced.

This procedure pastes CSDESCRIPTIVES command syntax.