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Pedigree Matrix for Observational Uncertainty Analysis

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Pedigree Matrix for Observational Uncertainty Analysis (Ellis et al., 2000a, 200b).

Score

Statistical quality

Empirical quality

Methodological quality

4

Excellent fit to a well-known statistical model (Normal, Lognormal, Binomial etc.) Controlled experiments & large sample direct measurements (n > 50). Approved standard in well-established discipline.

3

Good fit to a reliable statistical model by most fitting tests, but not all Historical/field data, uncontrolled experiments, small sample direct measurements (n < 50) Reliable method, common within discipline

2

Fitting tests not significant, model not clearly related to data, or model inferred from similar data Modeled data, indirect measurements, handbook estimates Acceptable method, but limited consensus on reliability

1

No statistical tests or fitting, subjective model Educated guesses, very indirect approximations, "rule of thumb" estimates Unproven methods, questionable reliability

0

Ignorance model (Uniform) Pure guesses Purely subjective method

Ellis, E.C., R.G. Li, L.Z. Yang, X. Cheng, Long-term change in village-scale ecosystems in China using landscape and statistical methods. Ecological Applications, 10 (4), 2000a, pp. 1057-1073.

Ellis, E.C., R.G. Li, L.Z. Yang, X. Cheng, Changes in Village-scale nitrogen storage in China's Tai Lake region. Ecological Applications, 10 (4), 2000b, pp. 1074-1096.

  

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