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

From Textbooks Feb. 14, 2019

Note that the most probable speed, νp, is a little less than 400 m/s, while the root mean square speed, urms, is closer to 500 m/s.

From Textbooks Feb. 14, 2019

In the KMT, the root mean square speed of a particle, urms, is defined as the square root of the average of the squares of the speeds with n = the number of particles:

From Textbooks Feb. 14, 2019

The angles at the top of the mean square tower are bevelled off to allow of a short octagonal spire and an octagonal balustrade.

From Old and New London Volume I by Thornbury, Walter

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