
Multiword Results
arithmetic mean 
the sum of a series of quantities divided by the number of quantities; average. 
golden mean 
the prudent, moderate course between extremes; happy medium. [2 definitions] 
mean business 
to intend definite and serious action. 
mean deviation 
a measure of variability, esp. in a statistical distribution, that is equal to the average of the absolute values of a set of deviations from the arithmetic mean or some other specified value. 
mean distance 
the arithmetic average of the greatest and least distances of a planet from the sun, used to describe the size of the planet's orbit. 
root mean square 
the square root of the arithmetic mean of the squares in a given set of numbers. 

