Integrated Time Series

Definition

An integrated time series represents a non-stationary sequence of cryptocurrency market data that achieves stationarity only after undergoing a specific degree of differencing. Traders identify these series through unit root testing, as raw price data often exhibits random walk characteristics that obscure underlying mean-reversion signals. Financial analysts apply this concept to mitigate spurious regressions, ensuring that predictive models for derivatives pricing maintain statistical validity over varying volatility regimes.