
Hi

Could just anyone explain me the coefficients in the output of arima model

timeseriesarima <- arima(series, order=c(1,1,2))
> timeseriesarima
Series: series
ARIMA(1,1,2)

Coefficients:
         ar1      ma1     ma2
      0.9744  -1.7695  0.7873
s.e.  0.0310   0.0481  0.0426

sigma^2 estimated as 337.4:  log likelihood=-1096.03
AIC=2200.07   AICc=2200.23   BIC=2214.2


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