A trading system enables back testing and chart studies while opinions and predictions can be just random and requiring more luck than skill. (newtraderu.com)
Thus, doing a thorough chart study of each investment that is chosen to buy or sell and using these levels based on many specific technical indicators may help. (investopedia.com)
After more than a decade, Alex's chart study remains the foundation of his trading style. (bigleaguefinance.com)