Professional
Statistician
The 10√x Rule: A Mathematical Deep Dive
Why the square root curve is the most balanced method for academic score adjustments.
The Math Behind the Curve
The 10√x curve is a nonlinear transformation that compresses the range while significantly boosting the lower quartile.
Why it Works
Unlike a linear shift (+10 points for everyone), the square root curve rewards effort on the hardest tasks where average performance is lower.
How-To Use the Scaler
- Select "Root Scale (10√x)".
- Enter your raw test scores.
- Compare the "Result" column to see how many students moved from a failing grade to a pass.