Standard Deviation Symbol Statistics. Mathematics braid group algebra. Standard deviation is a statistical measurement in finance that when applied to the annual rate of return of an investment sheds light on that investment s historical volatility.
Standard deviation may be abbreviated sd and is most commonly. σ and μ can be taken as subscripts for showing what you have taken as mean or the standard deviation of. The standard deviation is a measure of how spread out numbers are.
The sigma symbol σ uppercase sigma σ lowercase sigma is the eighteenth letter of the greek alphabet which is used to represent the symbol for standard deviation in math.
The greater the. A low standard deviation indicates that the values tend to be close to the mean also called the expected value of the set while a high standard deviation indicates that the values are spread out over a wider range. But here we explain the formulas. The standard deviation is a measure of how spread out numbers are.
