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Degree of zootechnics – barometer of economic development in the world countries
Merce, Emilian; Merce, Cristian Călin; Mureşan, Iulia - Volkswirtschaftliche Fakultät, … - 2013
using the regression and correlation method. The results prove that modern agriculture cannot exist in a rudimentary economy …
Persistent link: https://www.econbiz.de/10011259742
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The 2 x 2 x 2 case in causality, of an effect, a cause and a confounder. A cross-over’s guide to the 2 x 2 x 2 contingency table
Colignatus, Thomas - Volkswirtschaftliche Fakultät, … - 2007
Basic causality is that a cause is present or absent and that the effect follows with a success or not. This happy state of affairs becomes opaque when there is a third variable that can be present or absent and that might be a seeming cause. The 2 x 2 x 2 layout deserves the standard name of...
Persistent link: https://www.econbiz.de/10005789473
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A comparison of nominal regression and logistic regression for contingency tables, including the 2 × 2 × 2 case in causality
Colignatus, Thomas - Volkswirtschaftliche Fakultät, … - 2007
, and the question arises how the recently proposed concept of nominal correlation and regression (NCR) relates to it. (1 … regressions, NRC may show that the correlation still is low. (5) Risk difference regression may be a bridge to understand more …
Persistent link: https://www.econbiz.de/10005837360
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Correlation and regression in contingency tables. A measure of association or correlation in nominal data (contingency tables), using determinants
Colignatus, Thomas - Volkswirtschaftliche Fakultät, … - 2007
Nominal data currently lack a correlation coefficient, such as has already defined for real data. A measure is possible … association matrix. If that matrix is also positive semi-definite (PSD) then it is a proper correlation matrix. The overall … correlation then is R = f[R] where f can be chosen to impose PSD-ness. An option is to use f[R] = Sqrt[1 - det[R]]. However, for …
Persistent link: https://www.econbiz.de/10005621267