The Moving Average smooths price data to create a powerful measure of trend direction. Simple, weighted and exponential moving averages are most popular.

Simple moving averages are easy to construct, but prone to distortion: they tend to "bark twice".

Exponential moving averages are more sophisticated than simple moving averages and do not suffer from the same distortions.

Weighted moving averages eliminate the distortion common to simple moving averages, but are more difficult to construct than exponential moving averages.

Wilder moving averages are used mainly in indicators developed by J. Welles Wilder. Essentially the same as an exponential moving average, they use different weightings, for which users need to make allowance.

Filters are employed to reduce the number of whipsaws when using moving average systems.

Calculates moving averages using daily, weekly or monthly Highs/Lows/Opens.

How to select a long-term moving average to track the primary trend.

Fast and slow moving averages provide a powerful measure of trend strength and direction.

A more sophisticated MA system that uses a third moving average to identify ranging markets.

Daryl Guppy introduced multiple moving averages to measure trends and identify likely reversals. The indicator compares multiple short-term and long-term exponential moving averages.

Ivan Ballin's colorful variation of Daryl Guppy's Multiple Moving Averages.

Sometimes referred to as Percentage Bands, Price Envelopes are plotted at a set percentage above and below a moving average.

Linda Bradford Raschke popularized Keltner bands, plotted at an ATR multiple around an exponential MA, to filter trend entries.

MACD (Moving Average Convergence Divergence) is a powerful refinement of the two moving averages system, providing reliable signals of trend changes.

The MACD Histogram (Moving Average Convergence Divergence Histogram) provides far earlier and more responsive signals than the original MACD, but is also more volatile.

The MACD Histogram (Moving Average Convergence Divergence Histogram) provides a highly responsive measure of market direction but is more suited to traders than investors.