The difficulty of determining intrinsic value of stock prices have
led many people to use technical analysis in order to forecast
stock prices in the future. To predict the stock price we need to
determine the generating process of stock prices.
In recent years many time - series methods have been used for
forecasting purposes. One of these methods is the Rescaled
Range Analysis (RIS). In the article the R/S Analysis was used to
predict the price of Shahd common stock pries. The resutls
showed that stock price changes are not random and we can
predict the future stock prices based on the last fifty day stock
prices .