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There are two regression lines if there are two variables - one line for the regression of the first variable on the second and another line for the regression of the second variable on the first. If there are n variables you can have n*(n-1) regression lines.

With the least squares method, the first of two line focuses on the vertical distance between the points and the regression line whereas the second focuses on the horizontal distances.

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Q: Why are there two regression lines?

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Simple linear regression has one independent variable and one dependent variable. Multiple linear regression has more than one independent variables.

Linear Regression is a method to generate a "Line of Best fit" yes you can use it, but it depends on the data as to accuracy, standard deviation, etc. there are other types of regression like polynomial regression.

multivariate regression

8.7.4 Properties of Regression Coefficients:(a) Correlation coefficient is the geometric mean between the regression coefficients. (b) If one of the regression coefficients is greater than unity, the other must be less than unity.(c) Arithmetic mean of the regression coefficients is greater than the correlation coefficient r, providedr > 0.(d) Regression coefficients are independent of the changes of origin but not of scale.

Linear regression can be used in statistics in order to create a model out a dependable scalar value and an explanatory variable. Linear regression has applications in finance, economics and environmental science.

Related questions

It is not.

The means of the two variable, (x-bar, y-bar)

Yes.

The marine regression analysis showed that the new subdivision was responsible for the coastline erosion.The wrinkle cream showed a regression in age lines.

Regression Analysis:The average relationship between two or more variable.In English: Regression Mean Stepping back or moving toward the average.

I like to use age and height in a scatter plot using male and female separate then together. It shows two lines of regression.

The strength of the linear relationship between the two variables in the regression equation is the correlation coefficient, r, and is always a value between -1 and 1, inclusive. The regression coefficient is the slope of the line of the regression equation.

Regression analysis is a statistical technique to measure the degree of linear agreement in variations between two or more variables.

Regression analysis describes the relationship between two or more variables. The measure of the explanatory power of the regression model is R2 (i.e. coefficient of determination).

of, pertaining to, or determined by regression analysis: regression curve; regression equation. dictionary.com

Unit regression testing Regional regression testing Full regression testing

Regression.

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