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D bo bng m hnh ARIMA(AutoRegressive Integrated Moving Average)

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Nh# vP. chui RI;t ch#a dng8 9a cC th7 l. sai "hOn Pc Q cFa chui n.8

9hD 5em %& th6 orrelogram cFa chui sai "hOn Pc Q

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Nh# vP. sau +hi l. sai "hOn Pc Q chui % dng:d=Q! A t`t nhanh vb sau Q % tr*H=Q! >A giYm nhanh vb sau Q % tr*:"=Q

C th7 sD dEng m0 hnh ARIMA (Q!Q!Q)

". +,' -/ng v 0$%m *nh v,$ m hnh ARIMA

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Nh# vP.! sai sU cFa m0 hnh ARIMA(Q!Q!Q) l mt chui dng v nC cC "hOn "hUi chun8Jai sU n. l nhi*u tr`ng8

. Th' h$3n d bo9'i cDa s1 ;Huation cFa "h#$ng trnh! m n3t porecast

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