The efficiency of the Z-Score indicator was proved during the time, having a very precise evolution, especially in the long-time intervals (H4, D1, W1) for every market. For the small timeframes (M1, M5, M15, M30, H1), the Z-Score is a very good option combined with other known indicators like RSI, CCI, MACD etc. The indicator can be successfully used for manual trading or can be automated by importing the specific data series. The Z-Score indicator is an important part of the algorithms included in successful expert advisors like Dow Jones Predictor, Dow Jones Trader, Gold Predictor, or Gold Trader.