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Linear Regression Slope Calculator

Calculate the slope of a least-squares linear regression line from summary statistics of paired x and y data. The slope tells you how much y changes per unit change in x — central to forecasting, regression analysis, and any task that quantifies a linear relationship between two variables.

Number of Points

Sum of XY

Sum of X

Sum of X²

Fill in the required fields to see your result.

Statistics

Linear Regression Calculator

Fit a least-squares linear regression and read off the slope of the best-fit line y = a + b·x, using summary statistics (n, Σx, Σy, Σxy, Σx²) of paired x and y data. Used for trend analysis, forecasting, and quantifying how much y changes per unit change in x.

Sum of X Values

Sum of Y Values

Sum of XY Products

Sum of X²

Number of Data Points

Fill in the required fields to see your result.

Key differences

	Linear Regression Slope Calculator	Linear Regression Calculator
Category	Statistics	Statistics
Inputs required	4	5
Result	Slope (b)	Slope (b)
What it does	Calculate the slope of a least-squares linear regression line from summary statistics of paired x and y data. The slope tells you how much y changes per unit change in x — central to forecasting, regression analysis, and any task that quantifies a linear relationship between two variables.	Fit a least-squares linear regression and read off the slope of the best-fit line y = a + b·x, using summary statistics (n, Σx, Σy, Σxy, Σx²) of paired x and y data. Used for trend analysis, forecasting, and quantifying how much y changes per unit change in x.