DETEKSI STASIONERITAS DATA RUNTUN WAKTU MELALUI UJI AKAR-AKAR UNIT
DOI:
https://doi.org/10.31958/js.v3i1.37Abstract
even though there is no meaningful relationship between the two variables. Sometime we expect no relationship between the two variables, yet a regression of one on the other variable often shows a significant relationship. This situation exemplifies the problem of spurious regression. Spurious regression problem may arise from regressing a nonstationary time series variable on one or more nonstationary time series variable(s). Therefore, it considers important to be able to determine whether a time series data is stationary or not. A time series data is called stationary if it does not contain any unit roots. A test of stationary (or nonstationary) has become widely popular since the last two decades is the unit root test. This paper is meant to explain how to use unit root test in time series model especially for an autoregressive time series model.
Key words: autoregressive time series, stationary, unit root
References
Annonimous. 2010. Feromon. Dalam http://id.wikipedia.org/wiki/feromon. (Diunduh 15 Juni 2010).
Azmal AZ dan Fitriani. 2006. Surveilans Distribusi Spesies Lalat Buah di kabu-paten Belitung dan Kabupaten Belitung Timur. Stasiun Karantina Tumbuhan Tanjung Pandan. Available at http://www.ditlin.hortikultura.go.id/lalat-nuah/lalat-buah.htm-123. (Diunduh 2 November 2010).
Bes AH and Haromotov HF. 1961. Contribution to The Biology and Ecology of Oriental Fruit Fly Dacus dorsalis. Honulu: University of Hawaii.
Bryn HD, Gary AS, Uvidelio C, David E, Joe S, David K and Justin B. 2002. Naphthalene, an insect repellent, is produced by Muscodor vitigenus, a novel endophytic fungus. Microbiology. 148, 3737-3741.
Deptan. 2007. Tanaman Jeruk. Dalam www.ditlin.hortikultura.go.id/jeruk-cvpd/jeruk01.htm.(Diunduh 26 November 2010.)
Hasyim A, Muryati dan de kogel WJ. 2007. Kelimpahan relatif hama lalat buahpada beberapa jenis tanaman buah di kepu-lauan kundur. J. Horti vol 17 (1).105-408.
Kalie MB. 1999. Mengatasi Buah Rontok, Busuk dan Berulat. Jakarta: Penebar Swadaya.
Samoedi D. 1993. Daya pikat seksual untuk pengendalian hama ulat penggerek pucuk tebu, Tryporyza nivella (Lepi-doptera: Noctuidea). Bulletin No. 139. Pusat Penelitian Gula Indonesia. Hal: 25-33.
Sarwono B. 1988. Jeruk dan Kerabatnya. Jakarta: PT penebar Swadaya.
Sutrisno S. 1991. Current Fruit Fly Problems in Indonesia. Proceeding of Inter-nasional Symposium on The Biology and Control of Fruit Filies. Okinawa-Japan 2-4 September.72-78.
Takahashi, Watanabe, Saito dan Nomura. 1995. Isolation and biological activityof the sex pheromone of smoky brown cockroach, Periplaneta fuliginosa servile (Dictyoptera, Blattidae). App. Entomol. Zool.30(2):357-360.
Tronson D. 2001. The Odor, the Animal and the Plant. Molecules.6.104-116.
Tsuchido, Koji dan Ichihashi. 1995. Esti-mation of monitoring range of sex pheromone trap for the rice stem borer moth, Chilo suppressalis (walter) (Lepidoptera: Pyralidae) by male head width variation in relation to two host plants, rica and water oats. Appl. Entomol. Zool.30(3):415-423.
Yasuda K. 1995. Mass traping of the sweet potato weevil Cylas formicarius (Fabricus) (Coleoptera: Brentidae) with a syntethic sex pheromone. Appl. Entomol. Zool.30(1): 31-36.
Downloads
Published
Issue
Section
License
Copyright (c) 2016 Rusdi Rusdi
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work.
