About Curve Fitting
Drag data points and their error bars and watch the best-fit polynomial curve update instantly. You choose the type of fit: linear, quadratic, or cubic. The reduced chi-square statistic shows you when the fit is good. Or you can try to find the best fit by manually adjusting fit parameters.
How to play Curve Fitting
Everything is hands-on: drag, click and experiment — the simulation reacts instantly. Drag data points and their error bars and watch the best-fit polynomial curve update instantly.
Questions & answers
- What is Curve Fitting?
- Curve Fitting is a free interactive simulation from PhET Interactive Simulations (University of Colorado Boulder) that you can play right in your browser on crumble.lol — no downloads and no sign-up. Drag data points and their error bars and watch the best-fit polynomial curve update instantly. You choose the type of fit: linear, quadratic, or cubic.
- What can kids learn from Curve Fitting?
- It helps kids explore: explain how the range and uncertainty and number of data points affect correlation coefficient and chi squared describe how correlation coefficient and chi squared can be used to indicate how well a curve describes the data relationship apply understanding of curve fitting to designing experiments.
- What age is Curve Fitting good for?
- It is designed for high school up to university, and curious kids outside that range can absolutely enjoy poking around it too.
- Is Curve Fitting free to play?
- Yes — Curve Fitting is completely free on crumble.lol and runs fully in your browser on computers and tablets.