) is a specific instance of the generalized mean with
the cubic mean is defined as: For example, the cubic mean of two numbers is: The cubic mean is used to predict the life expectancy of machine parts.
[3][4][5][6] The cubic mean wind speed has been used a measure of local potential for wind energy.
[7] The cubic mean is also used in biology to measure the mean dimensions of spherical bacteria (cocci)[8] and of larger animals that are approximately spheroidal in shape.
[9] In this case using the conventional arithmetic mean will not give an accurate result because the size of a spherical bacterium increases as the cube of the radius.