Fisher F Test with Significantly Low Values in Small Samples

PhD Candidate Alina BARBU
Academy of Economic Studies – Bucharest


Testing for differences between groups is usually done with the Fisher-F test. In practice, it has been known to return unusually small, but significant values. This situation is seldom covered by theory, usually being considered a fault of the model or of the analysis. This paper looks at a real-life situation where significantly low F-values were encountered, and presents the way these values were treated.

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Romanian Statistical Review 4/2011