Assertion: distribution's variance | /r/HasProperty | undefined
Facets:
value: mathematically
type: MANNER
Source sentences:
text: <3} , the variance and the skewness of the tail is mathematically undefined (a special property of the power-law distribution), and hence larger than any normal or exponential distribution.
text: Fat-tailed distributions such as the Cauchy distribution (and all other stable distributions with the exception of the normal distribution) have "undefined sigma" (more technically, the variance is undefined).