Fig. 2From: Generation and validation of a formula to calculate hemoglobin loss on a cohort of healthy adults subjected to controlled blood lossRobustness indicators of the proposed new prediction formula: QQ plot, displaying stringent linearity for theoretical (X-axis) over sample (Y-axis) quantiles (a) and leverage vs. normalized residuals squared plot, showing–as desired–significant clustering of values around the origin of the graph (b). Numbers in the figure are the tuple of the leverage of the data point and the normalized squared residualBack to article page