Curve Fitting

Curve Fitting Screenshot  Download  Embed
  • Polynomials
  • Error Analysis
  • Data
Flash Logo Original Sim and Translations

Topics

  • Polynomials
  • Error Analysis
  • Data

Description

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.

Sample Learning Goals

  • 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

Standards Alignment

Common Core - Math

HSS-ID.B.6
Represent data on two quantitative variables on a scatter plot, and describe how the variables are related.
HSS-ID.B.6a
Fit a function to the data; use functions fitted to data to solve problems in the context of the data. Use given functions or choose a function suggested by the context. Emphasize linear, quadratic, and exponential models.
HSS-ID.B.6b
Informally assess the fit of a function by plotting and analyzing residuals.
Version 1.0.0

Teacher Tips

Download teacher tips PDF Overview of sim controls, model simplifications, and insights into student thinking ( PDF ).

Teacher-Submitted Activities

Curve Fitting: How well does the curve describe the data? (Inquiry Based) A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. This contribution was designed by PhET. Trish Loeblein, Mike Dubson UG-Intro
HS
Lab Mathematics
Chemistry
Physics
Concept questions for Physics using PhET (Inquiry Based) A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. This contribution was designed by PhET. Trish Loeblein UG-Intro
HS
MC Physics
Algebra-based Physics Semester one lessons, clicker questions, and schedule in pdf (Inquiry Based) A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. This contribution was designed by PhET. Trish Loeblein UG-Intro
HS
Demo
HW
Lab
Physics
Alignment of PhET sims with NGSS This contribution was designed by PhET. Trish Loeblein updated by Diana López HS
MS
Other Biology
Earth Science
Chemistry
Physics
Capacitor and Dielectric 2 Bassam Rashed UG-Adv
HS
Other
UG-Intro
HW
Demo
Lab
Remote
Guided
Physics
¿Qué tan bien la curva describe los datos? A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. This contribution was designed by PhET. Loeblein y Dubson (traducción Diana López) HS
UG-Intro
Remote
Guided
HW
Physics
Mathematics
SECUNDARIA: Alineación PhET con programas de la SEP México (2011 y 2017) This contribution was designed by PhET. Diana López HS
MS
Other Physics
Biology
Chemistry
Mathematics
PREPARATORIA: Alineación de PhET con programas de la DGB México (2017) This contribution was designed by PhET. Diana López HS
UG-Intro
Other Physics
Chemistry
Mathematics
PRIMARIA: Alineación con programas de la SEP México (2011 y 2017) This contribution was designed by PhET. Diana López K-5
MS
HW
Lab
Demo
Discuss
Guided
Astronomy
Physics
Mathematics
Chemistry
Estadística Andrés Gualberto Palomo Cuevas HS Remote
HW
Mathematics

Language Download or Run Tips
Albanian All shqip Download Run now Përafrimi (aproksimimi) i lakores
Basque All Euskara Download Run now Kurbak doitzea
Bosnian All Bosanski Download Run now Fitovanje podataka
Chinese (Simplified) All 中文 (中国) Download Run now 曲线拟合
Chinese (Traditional) All 中文 (台灣) Download Run now Curve Fitting_曲線擬合
Croatian All hrvatski Download Run now Prilagodba krivulje
Czech All čeština Download Run now Proložení křivkou
Danish All Dansk Download Run now Kurvetilpasning
Dutch All Nederlands Download Run now Fitting van kromme
French All français Download Run now Ajustement des Courbes
German All Deutsch Download Run now Kurven Anpassung
Greek All Ελληνικά Download Run now Προσαρμογή καμπύλης
Hebrew All עברית Download Run now התאמת עקומה
Hungarian All magyar Download Run now Görbeillesztés
Italian All italiano Download Run now Curve Fitting
Japanese All 日本語 Download Run now 曲線のグラフ
Kazakh All Kazakh Download Run now Функция кестесінің құрылымы
Korean All 한국어 Download Run now 곡선 맞춤
Mongolian All Монгол (Монгол) Download Run now Муруйг тодорхойлох
Persian All فارسی Download Run now برازش منحنی
Polish All polski Download Run now Dopasowanie krzywej
Portuguese (Brazil) All português (Brasil) Download Run now Ajuste de Curva
Russian All русский Download Run now Построение графика функции
Serbian All Српски Download Run now Фитовање података
Slovak All Slovenčina Download Run now Aproximácia krivky
Spanish All español Download Run now Ajustando la Curva Download teacher tips PDF
Spanish (Mexico) All español (México) Download Run now Ajustando la Curva Download teacher tips PDF
Spanish (Peru) All español (Perú) Download Run now Ajustando la Curva
Turkish All Türkçe Download Run now Eğri Çizimi
Vietnamese All Tiếng Việt Download Run now Vẽ đường cong thực nghiệm

HTML5 sims can run on iPads and Chromebooks, as well as PC, Mac, and Linux systems.

iPad:
iOS 12+ Safari
iPad compatible sims

Android:
Not officially supported. If you are using the HTML5 sims on Android, we recommend using the latest version of Google Chrome.

Chromebook:
Latest version of Google Chrome
The HTML5 and Flash PhET sims are supported on all Chromebooks.
Chromebook compatible sims

Windows Systems:
Microsoft Edge, latest version of Firefox, latest version of Google Chrome.

Macintosh Systems:
macOS 10.13+, Safari 13+, latest version of Chrome.

Linux Systems:
Not officially supported. Please contact phethelp@colorado.edu with troubleshooting issues.

Design Team Third-party Libraries Thanks To
  • Michael Dubson (lead designer, original developer)
  • Chris Malley (developer)
  • Jonathan Olson (developer)
  • Saurabh Totey (developer)
  • Martin Veillette (developer)
  • Amanda McGarry (lead designer)
  • Trish Loeblein
  • Ariel Paul
  • Kathy Perkins
  • almond-0.2.9.js
  • base64-js-1.2.0.js
  • FileSaver-b8054a2.js
  • font-awesome-4.5.0
  • game-up-camera-1.0.0.js
  • he-1.1.1.js
  • himalaya-0.2.7.js
  • jama-1.0.2
  • jquery-2.1.0.js
  • katex-0.11.0-css-all.js
  • katex-0.11.0.min.js
  • lodash-4.17.4.js
  • pegjs-0.7.0.js
  • seedrandom-2.4.2.js
  • text-2.0.12.js
  • TextEncoderLite-3c9f6f0.js