A Lexis ratio is defined by
 |
where 
is the variance
in a set of 
Lexis trials and 
is the variance assuming
Bernoulli trials. If 
, the trials are said to be subnormal,
and if 
,
the trials are said to be supernormal.
Lexis Ratio
See also
Bernoulli Trial, Lexis Trials, Subnormal, SupernormalExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Lexis Ratio." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/LexisRatio.html