Predictability at a time 
in the future is defined by
 |
and linear predictability by
 |
where 
and 
are the redundancy and linear
redundancy, and 
is the entropy.
Predictability
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Cite this as:
Weisstein, Eric W. "Predictability." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Predictability.html