80ee4947-c6c4-47a8-8be6-96e72bef8cef beie director@blueeyesintelligence.org 10.35940/ijrte.B6190.0710221 Anderson, T.W. (1971).The statistical Analysis of time series, John Wiley & Sons, New York.Awulachew SB, Erkossa T, Namara RE (2010). Irrigation potential in Ethiopia: Constraints and opportunities for enhancing the system. Unpublished Report to the Bill and Melinda Gates Foundation.10.1002/joc.1481Bewket W.Conway D. (2007). Note on the temporal and spatial variability of rainfall in the drought prone Amhara Region of Ethiopia Int. J. Climatol. 27: 1467-1477Box, G.E.P. and Jenkins, G.M. (1976). Time Series Analysis, Forecasting and Control. Revised Edition, Holden Day, San Francisco.10.1002/9781118619193Box G. E. P, G. M. Jenkins, and G. C.Reinsel.(2008) Time Series Analysis: Forecasting and Control. Wiley, New York, 5th edition.Journal of the American Statistical AssociationBox651509197010.1080/01621459.1970.10481180Distribution of the Autocorrelations in Autoregressive Moving Average Time Series ModelsBox, G. E. P. and Pierce, D. A. (1970), "Distribution of the Autocorrelations in Autoregressive Moving Average Time Series Models", Journal of the American Statistical Association, 65 1509-1526.Chatfield, C. (1991), "The Analysis of Time Series: An Introduction", 5th ed., Chapman and Hall, London.10.1029/2004GL019998Braganza K, Karoly DJ, Arblaster JM. (2004). Diurnal temperature rangeas an index of global climate change during the twentieth centuryGeophys. Res. Lett. 31(13): L13217.Gebre Hadgu1, Kindie Tesfaye, Girma Mamo and Belay Kassa (2013) Trend and variability of rainfall in MAYCHEW Northern Ethiopia: Analysis of meteorological data and farmers' perception , Academia Journal of Agricultural Research 1(6): 088-100Fekadu Bekele,(1997), Ethiopian Use of ENSO Information in Its Seasonal Forecasts, Journal of African StudiesGebreHadgu May (2013).Trend and variability of rainfall: research paper, northern Ethiopia.Meze-Hausken, Seleshi and Zanke(2004)Rainfall characteristics in dry land areas and critical for agricultural planning: many studies usedseasonal or annualtotals for trend analysis.10.1007/978-1-4419-0320-4P. J. Brockwell and R. A. Davis,.(1991) Time Series: Theory and Methods. Springer-Verlag, New York, 2nd edition.Ramakrishna, R., Naveen Kumar, B, M. Krishna Reddy.M. (2012),"Neural Networks Forecasting Model for Monthly Electricity Load in Andhra Pradesh",International Journal of Engineering and Research Applications ,Vol. 2, Issue 1,Jan-Feb 2012, pp1108-1115,ISSN:2229-5046.10.1007/978-1-4419-7865-3Robert H. Shumway ,David S. Stoffer, (2010). Time Series Analysis and Its Applications With R Examples, Springer. Pittsburgh, PA10.2307/2289741William W.S Wei (2006). Time Series Analysis: Univariate and Multivariate Methods,Journal of the American Statistical Association. 33(1)DOI:10.2307/2289741ISBN: 978-0-201-15911-0