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least squares

noun

, Statistics.
  1. a method of estimating values from a set of observations by minimizing the sum of the squares of the differences between the observations and the values to be found.


least squares

noun

  1. a method for determining the best value of an unknown quantity relating one or more sets of observations or measurements, esp to find a curve that best fits a set of data. It states that the sum of the squares of the deviations of the experimentally determined value from its optimum value should be a minimum
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word History and Origins

Origin of least squares1

First recorded in 1860–65
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Example Sentences

The algorithm evolved beyond the conventional least squares method and helped devise a neural circuit model optimized for energy efficiency over diverse walking speeds.

Each name was compared to the entire database of names in the other country using a least squares calculation of the difference in percentage of popularity in one country versus the other.

From Time

We applied a linear least squares fit and used the fit parameters to estimate the volatility for molecules for which we did not derive the structure.

From Nature

It was then that a young man named Carl Friedrich Gauss applied his method of least squares to historical patterns and was able to predict the orbit of Ceres .

From Forbes

It was then that a young man named Carl Friedrich Gauss applied his method of least squares and was able to predict the orbit of Ceres .

From Forbes

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least significant digitleast upper bound