Yuncheng size model | Xian Yang special model (certified) | apartment model

 If the P value is greater than 0.5, to accept the null hypothesis, indicating that non-stationary sequence; 2, just repeat the steps, view - unit root test, a dialog box appears, select the 1st difference Yuncheng size model, namely the variable first-order difference sequence do stationary test, and the first step in the same test, if the P value of less than 0.5 units Yongji model, that is the first order stable, if P values ??greater than 0.5, then proceed with the second order differential stationary test sequence. Changzhi apartment unit root tests do first model to see whether stationary sequence variable sequence in software testing, V model is the most well-known model, the other model although many rich practical experience of testers still are not familiar with V model, either. V model has existed for a long time family model, and the waterfall development model has some common features, which also and equally waterfall model has been criticized and questioned. V model of the process from left to right, describes the basic development process and testing behavior. Yuncheng size model | Xian Yang special model (certified) | Xian Yang family model is provided by specially designed Limited model. Xian Yang special model designed Ltd. (www.xamoxing.net) Xi'an, Shaanxi leader model toys over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Xian Yang special model leadership with the staff warmly welcome all inquiries negotiations to create Xian Yang special model a better future.