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This report concerns the use of a preliminary test of equality of regression slopes in two-sample simple linear regression datasets for the purpose of deciding whether to pool the two datasets and perform a single analysis. This work was performed as a supplement to the paper of Shao, Slud et al. (2014), The latter paper cites this one as a Census Bureau preprint of 2012, and applies its results in the context of model-assisted design-based survey eastimation. For a broader overview of estimation following preliminary testing, see the book of Saleh (2006).
Eric V. Slud. (2014). Moderate-Sample Behavior of Adaptively Pooled Stratified Regression Estimators. Center for Statistical Research & Methodology Research Report Series (Statistics #2014-01). U.S. Census Bureau. Available online at <http://www.census.gov/srd/papers/pdf/rrs2014-01.pdf>.
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