- Bias created by the use of information or data in a study or simulation that would not have been known or available during the period being analyzed. This will usually lead to inaccurate results in the study or simulation.
If an investor is backtesting the performance of a trading strategy, it is vital that he or she only uses information that would have been available at the time of the trade. For example, if a trade is simulated based on information that was not available at the time of the trade - such as a quarterly earnings number that was released three months later - it will diminish the accuracy of the trade's true performance.
Investment dictionary. Academic. 2012.
Look at other dictionaries:
Boolean satisfiability problem — For the concept in mathematical logic, see Satisfiability. 3SAT redirects here. For the Central European television network, see 3sat. In computer science, satisfiability (often written in all capitals or abbreviated SAT) is the problem of… … Wikipedia
City College of New York — CCNY redirects here. For the philanthropic organization, see Carnegie Corporation of New York. For other uses, see College of the City of New York (disambiguation). City College of New York Motto Respice, Adspice, Prospice (Look back, look at,… … Wikipedia
Decatur, Illinois — Coordinates: 39°51′6″N 88°56′39″W / 39.85167°N 88.94417°W / 39.85167; 88.94417 … Wikipedia
Reason (software) — Reason Reason 4 on Microsoft Windows 7 … Wikipedia
Success of fire suppression in northern forests — In North America, the belief that fire suppression has substantially reduced the average annual area burned is widely held by resource managers and is often thought to be self evident. Direct empirical evidence however is essentially limited to… … Wikipedia
Visual prosthesis — For the non functional prosthesis or glass eye see Ocular prosthesis and Craniofacial prosthesis. A visual prosthesis, often referred to as a bionic eye, is an experimental visual device intended to restore functional vision in those suffering… … Wikipedia
United States — a republic in the N Western Hemisphere comprising 48 conterminous states, the District of Columbia, and Alaska in North America, and Hawaii in the N Pacific. 267,954,767; conterminous United States, 3,022,387 sq. mi. (7,827,982 sq. km); with… … Universalium
Fox News Channel — Fox News redirects here. For other uses, see Fox News (disambiguation). Not to be confused with Fox News Radio and local news bulletins on the Fox Network Affiliates. Fox News Channel … Wikipedia
international relations — a branch of political science dealing with the relations between nations. [1970 75] * * * Study of the relations of states with each other and with international organizations and certain subnational entities (e.g., bureaucracies and political… … Universalium
Bradley effect — Tom Bradley speaking at AIDS Walk LA at the Paramount Studios lot in 1988 The Bradley effect, less commonly called the Wilder effect, is a theory proposed to explain observed discrepancies between voter opinion polls and el … Wikipedia