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The FI is calculated by multiplying the difference between the last and previous closing prices by the volume of the commodity, yielding a momentum scaled by the volume. The strength of the force is determined by a larger price change or by a larger volume. [1] The FI was created by Alexander Elder. [2] [3]
The Marshall-Edgeworth index, credited to Marshall (1887) and Edgeworth (1925), [11] is a weighted relative of current period to base period sets of prices. This index uses the arithmetic average of the current and based period quantities for weighting. It is considered a pseudo-superlative formula and is symmetric. [12]
In many cases, such as order theory, the inverse of the indicator function may be defined. This is commonly called the generalized Möbius function, as a generalization of the inverse of the indicator function in elementary number theory, the Möbius function. (See paragraph below about the use of the inverse in classical recursion theory.)
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As its formula suggests, the detrended price oscillator compares the current price with the average price that was some time ago. When the DPO crosses the zero level, it means that the current price is the same as it was some time ago. Depending on whether the cross is from below or from above, the change of trend can be assessed.
The formula for a given N-Day period and for a given data series is: [2] [3] = = + (()) = (,) The idea is do a regular exponential moving average (EMA) calculation but on a de-lagged data instead of doing it on the regular data.
A rate of change (ROC) indicator is the foundation of KST indicator. KST indicator is useful to identify major stock market cycle junctures because its formula is weighed to be more greatly influenced by the longer and more dominant time spans, in order to better reflect the primary swings of stock market cycle. [ 3 ]
The Elder Index is a measure of the cost of living for older adults in the United States. It is calculated for every county in the United States, and provides a realistic benchmark of living expenditure that includes housing, food, transportation, health care, and basic household items for older adults.