Autocorrelation 
 • Is the statistical dependency of items within a time series. This compares to Serial Correlation. 
 • The correlation of a variable with itself over successive time intervals. 

 Embedded terms in definition 
 Correlation Serial correlation Series Time Variable


 Referenced Terms 
 Random walk theory: A market analysis theory that argues that the past movement or direction of the price of a stock or market cannot be used to predict its future movement or direction.Is the financial theory that asserts that changesin price or rate time series are unpredictable. However, the theory recognizes that there is a statistical interdependency between the data. This nonrandom stickiness is sometimes referred to as Autocorrelation or serial correlation.

 Serial correlation: Is the statististical dependency of items between two or more times series. However, this term is sometimes used as a synonym for Autocorrelation. Compare these terms for distinctions.
