Linear Regression Calculator
Calculate linear regression line of best fit. Find slope, intercept, R-squared, and make predictions.
8 points detected
Scatter Plot with Regression Line
Data pointsRegression lineResiduals
Regression Results
0.9048
Slope (m)
1.4286
Intercept (b)
0.9048
R-squared (R²)
Additional Statistics
Correlation (r):0.9512
Standard Error:0.7766
Sample Size:8
Mean X:4.5000
Mean Y:5.5000
Predicted Y for X = 10:10.4762
Data Points & Residuals
XY (actual)Y (predicted)Residual
122.333333-0.333333
243.2380950.761905
354.1428570.857143
445.047619-1.047619
555.952381-0.952381
676.8571430.142857
787.7619050.238095
898.6666670.333333

Linear Regression Formulas

y = mx + b (line equation)
m = (n*ΣXY - ΣX*ΣY) / (n*ΣX² - (ΣX)²)
b = (ΣY - m*ΣX) / n
R² = (correlation coefficient)²

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