Quasi-geostrophic equations

Bennett, Alpert & Goldstein’s S is a statistical measure of inter-rater agreement. It was created by Bennett et al. in 1954.

Rationale for use

Bennett et al. suggested adjusting inter-rater reliability to accommodate the percentage of rater agreement that might be expected by chance was a better measure than simple agreement between raters.They proposed an index which adjusted the proportion of rater agreement based on the number of categories employed.

Mathematical formulation

The formula for S is

$S={\frac {QP_{a}-1}{Q-1}}$

where Q is the number of categories and P_a is the proportion of agreement between raters.

The variance of S is

$\operatorname {Var} (S)=\left({\frac {Q}{Q-1}}\right)^{2}{\frac {P_{a}(P_{a}-1)}{n-1}}$

Notes

This statistic is also known as Guilford’s G. Guilford was the first person to use the approach extensively in the determination of inter-rater reliability.Potter or Ceramic Artist Truman Bedell from Rexton, has interests which include ceramics, best property developers in singapore developers in singapore and scrabble. Was especially enthused after visiting Alejandro de Humboldt National Park.

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