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PEDAR: Research Methodology High School Academic Curriculum and the Persistence Path Through College
The Beginning Postsecondary Students Longitudinal Study
Accuracy of Estimates
Data Analysis System
Statistical Procedures
Differences in Means
Linear Trends
Adjustment of Means to Control for Covariation
Executive Summary
References
Full Report (PDF)
Executive Summary (PDF)
Statistical Procedures


Three types of statistical procedures were employed in this report:

  1. testing differences between means (or proportions),

  2. testing linear trends, and

  3. adjustment of means after controlling for covariation among several variables.


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