In statistics, a trend is a long-term movement in time series data after other components have been accounted for.
In technical analysis of financial markets, trend is the existing general direction of energy expressed as the relationship between prices. It is the discovery and monitoring of human nature that leads to the actions of speculators and investors.
In behavioral finance, a trend is interpreted as a three-step market price upward or downward move due to the reactions of investors as a social group to known information: 1/ underreaction, 2/ adjustment, 3/ overreaction.
In common language, a trend is another word for fashion, and is also related to social behavior.
Trends are a series of scientific journals of biology.
