Complex Samples Ratios Statistics

Statistics. This group produces statistics associated with the ratio estimate.

• Standard error. The standard error of the estimate.
• Confidence interval. A confidence interval for the estimate, using the specified level.
• Coefficient of variation. The ratio of the standard error of the estimate to the estimate.
• Unweighted count. The number of units used to compute the estimate.
• Population size. The estimated number of units in the population.
• Design effect. The ratio of the variance of the estimate to the variance obtained by assuming that the sample is a simple random sample. This is a measure of the effect of specifying a complex design, where values further from 1 indicate greater effects.
• Square root of design effect. This is a measure of the effect of specifying a complex design, where values further from 1 indicate greater effects.

T test. You can request t tests of the estimates against a specified value.

Obtaining Statistics for Complex Samples Ratios

This feature requires the Complex Samples option.

1. From the menus choose:

   Analyze > Complex Samples > Ratios...

2. Select a plan file. Optionally, select a custom joint probabilities file.
3. Click Continue.
4. In the Complex Samples Ratios dialog box, click Statistics.
5. Select the statistics that you want.