source("//yrzhibo.com/teachers/xirb/Courses/TimeSeries/code/atsa01.r")
source("//yrzhibo.com/teachers/xirb/Courses/TimeSeries/code/atsa02.r")
source("//yrzhibo.com/teachers/xirb/Courses/TimeSeries/code/atsa03.r")
source("//yrzhibo.com/teachers/xirb/Courses/TimeSeries/code/atsa04.r")
source("//yrzhibo.com/teachers/xirb/Courses/TimeSeries/code/atsa05.r")
source("//yrzhibo.com/teachers/xirb/Courses/TimeSeries/code/atsa06.r")
demo.ar.est() 

demo.pacf()

demo.ar.order()