The cubic mean (written as

\bar_\mathrm

) is a specific instance of the generalized mean with

p=3

Definition

For

n

real number In mathematics, a real number is a number that can be used to measure a ''continuous'' one-dimensional quantity such as a distance, duration or temperature. Here, ''continuous'' means that values can have arbitrarily small variations. Every real ...

x_i \in \mathbb R

the cubic mean is defined as: :

\bar_\mathrm = \sqrt = \sqrt

For example, the cubic mean of two numbers is: :

\sqrt /math>.

Applications

It is used for predicting the life expectancy of machine parts.

References

{{Reflist Means