Abstract
In this paper, we provide a definition of pattern of outliers in contingency tables within a model-based framework. In particular, we make use of log-linear models and exact goodness-of-fit tests to specify the notions of outlier and pattern of outliers. The language and some techniques from Algebraic Statistics are essential tools to make the definition clear and easily applicable. We also analyse several numerical examples to show how to use our definitions.
| Original language | English |
|---|---|
| Pages (from-to) | 784-797 |
| Number of pages | 14 |
| Journal | Scandinavian Journal of Statistics |
| Volume | 39 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Dec 2012 |
| Externally published | Yes |
Keywords
- Algebraic statistics
- Goodness-of-fit tests
- Log-linear models
- Toric models
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