Time-Series-Analysis Using MS Excel,Matlab and SPSS Statistics, I will explore different aspects of time series analysis. Mainly: 1- Trend models: Linear, Exponential, Logistic, Gompertz. 2- Time series decomposition: Additif/Multiplicatif models. 3- Exponential Smoothing: Simple, Double, Holt, Holt-Winters. 4- Box-Jenkins method.