Fig. 1

The figure gives the absolute value of the ratio between \( {\overset{\sim }{\beta}}_3 \) and \( {\overset{\sim }{\beta}}_i,\kern0.5em i=1,2 \) for ρ = 0.2 (blue line), 0.5 (red line) and 0.7 (green line) as a function of the cut point c when β₁ = β₂ = 1