longbridge-quant-stats Apply rigorous statistical methods to financial time-series data retrieved from Longbridge — test assumptions before modelling, diagnose residuals, and produce statistically sound inferences. Response language : match the user's input language — Simplified Chinese / Traditional Chinese / English. When to use - "帮我做 ADF 单位根检验" , "run an ADF test on this price series" , "幫我做 ADF 單位根檢驗" - "AAPL 和 MSFT 有没有协整关系" , "are AAPL and MSFT cointegrated" - "用 GARCH 建模波动率" , "model volatility with GARCH" - "回归残差有没有自相关" , "check residual autocorrelation (Durbin-Watson)" - "用 Bootstrap…