The standard error (SE) is the standard deviation of the sampling distribution of a statistic. The term may also be used to refer to an estimate of that
The variance is a parameter that describes, in part, either the actual probability distribution of an observed population of numbers, or the theoretical
In probability theory, the normal (or Gaussian) distribution is a very commonly occurring continuous probability distribution—a function that tells the
In finance, volatility is a measure for variation of price of a financial instrument over time.
return is a profit on an investment. It comprises any
The Sortino ratio measures the risk-adjusted return of an investment asset, portfolio, or strategy. It is a modification of the Sharpe ratio but penalizes