Linear Regression Calculator

One Variable

The tool calculates the Linear equation, R, p-value, outliers and the adjusted Fisher-Pearson coefficient of skewness. After checking the residuals' normality and priori power, the program interprets the results. Then, it draws a histogram, a residuals QQ-plot, a residuals x-plot, and a distribution chart.
For multiple regression with stepwise method and more validations go to: multiple regression
video tutorial

Significant level (0-1), maximum chance allowed rejecting H0 while H0 is correct (Type1 Error)
0.02 - small effect, 0.15 - medium effect, 0.35 - large effect.
Force zero Y-intercept (b)

Header - You may change groups' name to the real names.
Data - When entering data, press Enter after each value
It is okay to leave empty cells, empty cells or non numeric cells won't be counted.


Right-tailed F test. Checks if the regression model is statistically significant.
H0: Y = b0
H1: Y = b0+b1X
Test statistic
F statistic
F distribution
F distribution right tailed