PHP Class MathPHP\Statistics\Regression\Linear
A model with a single explanatory variable.
Fits a straight line through the set of n points in such a way that makes
the sum of squared residuals of the model (that is, vertical distances
between the points of the data set and the fitted line) as small as possible.
https://en.wikipedia.org/wiki/Simple_linear_regression
Having data points {(xᵢ, yᵢ), i = 1 ..., n }
Find the equation y = mx + b
_ _ __
x y - xy
m = _________
_ __
(x)² - x²
_ _
b = y - mx
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Open project: markrogoyski/math-php
Public Methods
| Method |
Description |
|
|
calculate ( ) |
Calculates the regression parameters. |
|
Method Details
calculate()
public method
Calculates the regression parameters.