Tests for a Single Outlier in a Gamma Sample with Unknown Shape and Scale Parameters | Zendy

Kimber A. C. | Zendy

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Tests for a Single Outlier in a Gamma Sample with Unknown Shape and Scale Parameters

Author(s) -

Kimber A. C.

Publication year - 1979

Publication title -

journal of the royal statistical society: series c (applied statistics)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.205

H-Index - 72

eISSN - 1467-9876

pISSN - 0035-9254

DOI - 10.2307/2347194

Subject(s) - outlier , normality , transformation (genetics) , scale (ratio) , mathematics , statistics , sample (material) , maximum likelihood , physics , geography , cartography , thermodynamics , biochemistry , chemistry , gene

S ummary Three tests for a single outlier are proposed and applied to gamma samples with unknown parameters; one based on the principle of maximum likelihood, the others using a transformation of the variables to approximate normality. Percentage points are tabulated where necessary. The performance of the tests in the presence of a single outlier is investigated in detail and their behaviour when two outliers are present is also considered.

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