5 EMA
A 5-period EMA is a dynamic line on a trading chart that's highly responsive to recent price movements. The 5 EMA scalping strategy looks for reversals when the price moves away from the 5 EMA, which is considered the mean point of the price.
15 EMA
A 15 EMA is used in conjunction with the 5 EMA to identify bullish crossovers. A bullish crossover occurs when the 5 EMA crosses above the 15 EMA.