Technical analysis uses statistical data like price and volume history to predict future stock price movements. Charts are a primary tool, including line, bar, volume bar, and candlestick charts. Trends show the general direction of prices over time, either up (uptrend) or down (downtrend). Support and resistance levels indicate price points where a stock has previously found support (stopped falling) or resistance (stopped rising). Moving averages smooth price data to help identify trends. Technical analysis assumes markets discount all information, prices trend over time, and history tends to repeat.