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Both calculators run independently — change the inputs on either side to compare results.

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

Variance Calculator

Compute population or sample variance from the sum of squared deviations and the sample size. The fundamental measure of how spread out a dataset is around its mean, and the building block of standard deviation, ANOVA, and most parametric inference.

Number of Values

Sum of Squared Deviations

Variance Type

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Key differences

	Linear Regression Slope Calculator	Variance Calculator
Category	Statistics	Statistics
Inputs required	4	3
Result	Slope (b)	Variance
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.	Compute population or sample variance from the sum of squared deviations and the sample size. The fundamental measure of how spread out a dataset is around its mean, and the building block of standard deviation, ANOVA, and most parametric inference.