# Calculation

A calculation is a deliberate process for transforming one or more inputs into one or more results, with variable change.

The term is used in a variety of senses, from the very definite arithmetical calculation of using an algorithm to the vague heuristics of calculating a strategy in a competition or calculating the chance of a successful relationship between two people.

For example, multiplying 7 by 6 is a simple algorithmic calculation. Estimating the fair price for financial instruments using the Black–Scholes model is a complex algorithmic calculation.

Statistical estimations of the likely election results from opinion polls also involve algorithmic calculations, but provide results made up of ranges of possibilities rather than exact answers.

To calculate means to ascertain by computing. The English word derives from the Latin calculus, which originally meant a small stone in the gall-bladder (from Latin calx). It also meant a pebble used for calculating, or a small stone used as a counter in an abacus (Latin abacus, Greek abax). The abacus was an instrument used by Greeks and Romans for arithmetic calculations, preceding the slide-rule and the electronic calculator, and consisted of perforated pebbles sliding on an iron bars.

### Other articles related to "calculation":

Calculation - Comparison To Computation
... In English, calculation involves numbers and the word usually connotes a simple process, but computation may be done by applying specific rules, with ... Calculation is a prerequisite for computation ... The difference in the meaning of calculation and computation appears to originate from the late medieval period ...
Liu Hui's π Algorithm - Quick Method
... Calculation of square roots of irrational numbers was not an easy task in the third century with counting rods ... happy with this result because he had acquired the same result with the calculation for a 1536-gon, obtaining the area of a 3072-gon ... After all calculation of square roots was not a simple task with rod calculus ...
Measuring Seasonality - Calculation - Remarks
2 ... In a multiplicative time-series model, the seasonal component is expressed in terms of ratio and percentage as Seasonal effect = (T*S*C*I)/( T*C*I)*100 = Y/(T*C*I )*100 However in practice the detrending of time-series is done to arrive at S*C*I ...

### Famous quotes containing the word calculation:

Common sense is the measure of the possible; it is composed of experience and prevision; it is calculation appled to life.
Henri-Frédéric Amiel (1821–1881)

“To my thinking” boomed the Professor, begging the question as usual, “the greatest triumph of the human mind was the calculation of Neptune from the observed vagaries of the orbit of Uranus.”
“And yours,” said the P.B.
Samuel Beckett (1906–1989)