A Comparative study on ARIMA model and Exponential smoothing method in time series forecasting

The study aims at comparing ARIMA models and the exponential smoothing method in forecasting. This study also highlights the special and basic concepts of ARIMA model and the exponential smoothing method. The comparison focuses on the ability of both methods to forecast the time series with a narrow range of one point to another and the time series with a long range of one point to another, and also on the different lengths of the forecasting periods. Currency exchange rates of Shekel to American dollar were used to make this comparison in the period between 25/1/2010 to 22/10/2016. In addition, weekly gold prices were considered in the period between 10/1/2010 to 23/10/2016. RMSE standard was used in order to compare between both methods. In this study, the researcher came up with the conclusion that ARIMA models give a better forecasting for the time series with a long range of one point to another and for long term forecasting, but cannot produce a better forecasting for time series with a narrow range of one point to another as in currency exchange prices. On the contrary, exponential smoothing method can give better forecasting for Exchange Rates that has a narrow range of one point to another for its time series, while it cannot give better forecasting for long term forecasting periods

Impact of Electronic promotion on the Market share of Banks in the Northern West Bank

This study sought to examine the relation of electronic promotion and the market share and their relation with gender, marital status, age, job, type of bank, and origin of the bank. To this end, a questionnaire was developed and administered to a stratified random sample of 103 bank employees in the northern west Bank, After date collection and analysis, it was found that there was a positive relation between advertising and public relations and inherence went of sale through electronic promotion means, on one hand, and the market share, on the other hand. It was also found that there were significant differences in market share in favor of age group less than 30 years. There were also differences between electronic promotion and market share in favor of Islamic bank and the indigenous Palestinian banks. In the light of these findings, the researcher recommends that banks hold contract with internet companies or electronic promotion establishments to launch electronic promotion and campaigns in order to get access to all citizen, increasing number of clients and enhancing sales promotion.