Scatterplots & Correlation
by Anonymous · ⭐ 1 · 🍴 0
You can spot the relationship between two quantities just by looking at how the points are spread out. Find the closest-fitting line by eye—no formula needed—and see why predictions are reliable only within the range of the data.
🔗 Open in a new tabShare on XOpens X in a new tab with a post ready to edit — nothing is posted until you send it.
About this app
Scatterplots & Correlation is an interactive middle-school statistics activity for exploring how two quantities relate. Examine five dot patterns to identify strong or weak positive correlation, no correlation, and negative correlation; adjust a line to see how slope, intercept, and total gaps affect fit. A separate activity uses study hours and scores to compare interpolation within the data range with risky extrapolation outside it.
Use cases
- Middle-school students learning scatterplots and correlation
- Teachers demonstrating positive, negative, and zero correlation
- Learners practicing visual line fitting without formulas
- Students exploring interpolation and extrapolation
- Classroom review of introductory statistics concepts
Features
- Cycle through five scatterplot patterns and classify their correlation
- Adjust slope and intercept with step controls
- Display red dashed gaps and a total gap value for the current line
- Compare study-hours data with unrelated data
- Move a guess point inside or outside the data range
- Complete guided missions with reset and next controls