R² Target Practice — Clean Blueprint

What is R² (Coefficient of Determination)?

R² measures how much of the variation in the points is explained by your line.

Range: 0 to 1 (higher is better)
R² = 1: all points lie on the line (perfect fit)
Computation: R² = 1 − SSE/SST, where SSE is the sum of squared residuals and SST is total variance around the mean.

Angle (Slope)

0.00

Height (Intercept)

0.00

0%

Model Fit

Total Score: 0

Tip: make the solid line follow the center of the cloud; shorter red bars → higher R².