Feature Scaling Calculator

This calculator applies four scaling methods to one Raw Value in parallel, and each formula deliberately ignores the inputs the others depend on: Min-Max Scaled and Max-Abs Normalized never reference Mean or Standard Deviation (lines 11, 15), while Z-Score never references Minimum Value or Maximum Value (line 12) — every method reads only the inputs its own textbook definition calls for. "Robust Scaled Value" here is Raw Value minus Mean, divided by the min-max range (line 13) — a range-based approximation, not the textbook robust scaler, which centers on the median and divides by the interquartile range to resist outliers the way this version cannot. A trap worth flagging explicitly: this calculator ships with Raw Value and Mean both defaulted to 50, so Z-Score, Robust Scaled Value, and Deviations from Mean all read exactly 0 out of the box, and nudging Raw Value, Mean, or even Standard Deviation up and down by the same amount shows zero effect on Deviations from Mean at those defaults — not because those inputs are irrelevant, but because Deviations from Mean is defined as the absolute value of Z-Score (line 23), so a symmetric nudge that pushes the underlying z-score to, say, +0.1 in one direction and −0.1 in the other reads identically once the sign is stripped; move Raw Value to anything other than 50 (breaking that symmetry around zero) and all three respond immediately.

What this does not account for: outlier resistance in "robust" scaling (it uses range, not IQR), and it never checks whether Minimum Value is actually less than Maximum Value before computing a range.