I would like to know what are the differences between somers’d value and the Gini coefficient. I have the following values for factors:
Factor Somers’ D Factor 1 -0.1 Factor 2 0.24 Factor 3 -0.01
In terms of Gini, I should change signs from Somers’D column:
Factor Gini Factor 1 0.1 Factor 2 -0.24 Factor 3 0.01
Is it correct? Could you please tell me what changes between the two representations?