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Mass-dependent mass...
Mass-dependent mass loss in breeding birds : getting the null hypothesis right
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Cichon, M (författare)
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- Merilä, Juha (författare)
- Uppsala universitet,Populationsbiologi
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- Hillström, Lars (författare)
- Uppsala universitet,Zooekologi
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- Wiggins, David (författare)
- Uppsala universitet,Zooekologi
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(creator_code:org_t)
- JSTOR, 1999
- 1999
- Engelska.
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Ingår i: Oikos. - : JSTOR. - 0030-1299 .- 1600-0706. ; 87:1, s. 191-194
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.2...
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Abstract
Ämnesord
Stäng
- An assumption central to many tests of statistical association between two variables is the null expectation of zero association. Here, we draw attention to the fact that in many published tests of mass-dependent mass loss in breeding birds, this assumption has been violated. We show that a correct null hypothesis can be derived by using resampling methods, and analyse three data sets (two previously published) from passerine birds to illustrate the approach. Our results show, that under a correct null hypothesis, the biological interpretation of the previously published results is reversed-initially heavy birds do actually lose less mass (relative to their weight) than the initially light birds.
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- art (ämneskategori)
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