# Line of Best Fit

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## Definition of 'Line of Best Fit'

A line of best fit is a line that is drawn through a set of data points in such a way that it minimizes the sum of the squared residuals. In other words, it is the line that best represents the trend of the data.

The line of best fit is often used in regression analysis, which is a statistical technique for modeling the relationship between two or more variables. In a simple linear regression, there are two variables: the dependent variable and the independent variable. The dependent variable is the variable that you are trying to predict, and the independent variable is the variable that you are using to make the prediction.

The line of best fit is a linear equation that can be used to predict the value of the dependent variable for a given value of the independent variable. For example, if you are trying to predict the price of a house based on its square footage, the line of best fit would be a linear equation that would allow you to predict the price of a house for any given square footage.

The line of best fit is calculated using a method called least squares regression. This method finds the line that minimizes the sum of the squared residuals. The residuals are the differences between the actual values of the dependent variable and the values predicted by the line of best fit.

The line of best fit is a useful tool for data analysis and predictive modeling. It can be used to identify trends in data and to make predictions about future values.

The line of best fit is often used in regression analysis, which is a statistical technique for modeling the relationship between two or more variables. In a simple linear regression, there are two variables: the dependent variable and the independent variable. The dependent variable is the variable that you are trying to predict, and the independent variable is the variable that you are using to make the prediction.

The line of best fit is a linear equation that can be used to predict the value of the dependent variable for a given value of the independent variable. For example, if you are trying to predict the price of a house based on its square footage, the line of best fit would be a linear equation that would allow you to predict the price of a house for any given square footage.

The line of best fit is calculated using a method called least squares regression. This method finds the line that minimizes the sum of the squared residuals. The residuals are the differences between the actual values of the dependent variable and the values predicted by the line of best fit.

The line of best fit is a useful tool for data analysis and predictive modeling. It can be used to identify trends in data and to make predictions about future values.

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