Min-Max:   (3000 - 1000) / (4000 - 1000) = 2000 / 3000 = 0.6667
Mean Norm: (3000 - 2400) / (4000 - 1000) = 600 / 3000 = 0.2000
Z-score:   (3000 - 2400) / 1019.80 = 600 / 1019.80 = 0.5883

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