| The Journal of Real Estate Finance and Economics | |
| Volume 14, Issue 1, Article 2 (Abstract) | |
| Title: | Sample Selection Bias and Repeat-Sales Index Estimates |
| Author: | Dean H. Gatzlaff and Donald R. Haurin |
| Abstract: | Analysis of variations in house values among localities requires reliable house value indices. Gatzlaff and Haurin (1994) indicate that traditional hedonic house value index estimates, using only information from a sample of sold homes to estimate value movements for the entire housing stock, may be subject to substantial bias. This paper extends previous work by adapting the censored sample procedure to the repeat-sales index estimation model. Using data from Dade County Florida, a house value index constructed from a sample of homes selling more than once, rather than all houses in a locality, is found to be biased. the bias is shown to be highly correlated with changes in economic conditions. |
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