TY - JFULL AU - Amel Abdoullah Ahmed Dghais and Mohd Tahir Ismail PY - 2013/1/ TI - A Comparative Study between Discrete Wavelet Transform and Maximal Overlap Discrete Wavelet Transform for Testing Stationarity T2 - International Journal of Mathematical and Computational Sciences SP - 1676 EP - 1681 VL - 7 SN - 1307-6892 UR - https://publications.waset.org/pdf/9996697 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 84, 2013 N2 - In this paper the core objective is to apply discrete wavelet transform and maximal overlap discrete wavelet transform functions namely Haar, Daubechies2, Symmlet4, Coiflet2 and discrete approximation of the Meyer wavelets in non stationary financial time series data from Dow Jones index (DJIA30) of US stock market. The data consists of 2048 daily data of closing index from December 17, 2004 to October 23, 2012. Unit root test affirms that the data is non stationary in the level. A comparison between the results to transform non stationary data to stationary data using aforesaid transforms is given which clearly shows that the decomposition stock market index by discrete wavelet transform is better than maximal overlap discrete wavelet transform for original data. ER -