Linear Regression - five datasets, drag points, SSE and R²

Data Science & Big Data Analytics • ITec4121 • Wolkite University • Online-First

Five datasets with 9–11 points each (mock exam, experience–salary, house size–price, study time–score, temperature–ice cream). Drag slope and intercept with sliders or typed numbers, shuffle the y-values to see R² collapse, and - best of all - drag any data point to watch the fitted line and residual bars update live. Read SSE, R² and the correlation coefficient, then ask for the least-squares fit.