+Least squares is a fundamental approach in [Statistics](/wiki/statistics) for finding the "best fit" relationship within a set of data. It minimizes the sum of the squares of the differences between observed and predicted values, forming the basis for many [Regression](/wiki/regression) models and predictive analytics.
+## See also
+- [Optimization](/wiki/optimization)
+- [Linear Algebra](/wiki/linear_algebra)
+- [Curve Fitting](/wiki/curve_fitting)
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