Least-Squares Regression
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About
Topics
- Linear Regression
- Correlation
- Residuals
- Outlier
- Data
Description
Create your own scatter plot or use real-world data and try to fit a line to it! Explore how individual data points affect the correlation coefficient and best-fit line.
Sample Learning Goals
- Interpret r (the correlation coefficient) as data points are added, moved, or removed.
- Interpret the sum of the squared residuals while manually fitting a line.
- Interpret the sum of the squared residuals of a best-fit line as a data point is added, moved, or removed.
- Compare the sum of the squared residuals between a manually fitted line and the best-fit line.
- Determine if a linear fit is appropriate.
For Teachers
Teacher Tips
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Overview of sim controls, model simplifications, and insights into student thinking ( PDF ). |
Teacher-Submitted Activities
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Authors | Level | Type |
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| Alignment of PhET sims with NGSS |
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Trish Loeblein | HS | Other | |
| How do PhET simulations fit in my middle school program? |
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Sarah Borenstein | MS | Other | |
| CCSS Math Alignment with Sims |
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Amanda McGarry | K-5 MS HS |
Other | |
| Correlation vs Causation | Andy Braaten | HS UG-Intro |
Lab | ||
| PhET Simulations Aligned for AP Physics C | Roberta Tanner | HS | Other | ||
| MS and HS TEK to Sim Alignment | Elyse Zimmer | HS MS |
Other | ||
| Preguntas de razonamiento para todas las simulaciones HTML5 |
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Diana López | K-5 MS Grad HS UG-Intro UG-Adv |
HW Discuss |
Translations
Related Simulations
Software Requirements
| Windows 7+ | Mac OS 10.7+ | iPad and iPad Mini with iOS | Chromebook with Chrome OS |
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Microsoft Edge and Internet Explorer 11, latest version of Firefox, latest version of Chrome.
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Safari 9+, latest version of Firefox, latest version of Chrome.
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Latest version of Safari
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Latest version of Chrome
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Credits
| Design Team | Third-party Libraries | Thanks To |
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