✳️Different autocorrelation coefficient (-1,1) can get the sampling distribution of Durbin-Watson test statistic, so users can test nonzero autocorrelation!! 📌This slide show you the autocorrelation coefficient is a main factor of sampling distribution of Durbin-Watson test statistic. 🆓The software has been released on google site, https://tinyurl.com/dwtestsoftware. ✅Source code included. ✅ Software running video: https://youtu.be/hDt1fxhrfaw 🔆 seek cooperation!!!!