The Data Analysis System (DAS) is a software application that allows you to produce tables and to estimate covariance analyses from NCES data sets. There is a separate DAS for each data set, but all have a consistent interface and command structure. Each DAS runs in two modes-Tables and Covariance Analysis. Using the DAS Online, you can create programming instruction files, run tables and regressions, and view output using a web browser.

Tables

In the Tables mode, the DAS will create a table of estimates, corresponding standard errors that are calculated by taking into account the complex sampling designs used in NCES surveys, and weighted sample sizes for the estimates.

• Creating Tables
• The Table Parameter File (TPF)
• The Table

Covariance Analyses

In the Covariance Analysis mode, the DAS will generate output for a weighted least square regression or logistic regression. It is helpful to have a basic knowledge of multiple regressions before you use this DAS feature.

• Creating Covariance Analyses
• Independent and Dependent Variables
• Types of Regressions
• The Covariance Parameter File (CPF)
• The Covariance Analysis Output
• Advanced Options