Technical analysts often use an array of math-based tools to analyze charts so they can anticipate what might happen with future price movements based on past data and behavioral patterns; these tools include Fibonacci Retracements, MACD Indicators & Exponential Moving Averages (EMA). People also use standard deviation calculations along with trendlines to determine how volatile certain assets may become in comparison with peers within their chosen industry sector or as part of a larger economic context over time.