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mean square

American  

noun

Statistics.

  1. the mean of the squares of a set of numbers.

Etymology

Origin of mean square

First recorded in 1835–45

Example Sentences

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What is the effect on the root mean square speed of the molecules?

From Textbooks • Feb. 14, 2019

The root mean square speed of H2 molecules at 25 °C is about 1.6 km/s.

From Textbooks • Feb. 14, 2019

What is the ratio of the root mean square speeds, urms, of the two gases?

From Textbooks • Feb. 14, 2019

What is the root mean square speed of a N2 molecule at 25 °C?

From Textbooks • Feb. 14, 2019

R� = the mean square of the radii of the figure.

From Scientific American Supplement, No. 1082, September 26, 1896 by Various

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.