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The Chart Angle Delusion

“The lack of intrinsic meaning of angles on a bar chart has significance even for chart-oriented traders who do not employ angles. How sharply a trend slopes on a chart is often a psychological consideration in making a trade. If you fall prey to this influence, you’re letting the chart maker’s practical and aesthetic considerations impinge on your trading. Any trend can be made to look either gentle or steep by adjusting the price scale. ”

– William Eckhardt, New Market Wizards

If you use price action as a filter — and visually interpret charts as part of your process — how do you guard against the chart angle delusion?

One potential remedy is focusing on hard inputs that are independent of chart aesthetics. High and low point successions, moving average crosses, and volatility expansion / contraction (changes in average trading range) are three examples.

Another helpful practice is deliberately viewing more horizontally extended (flattened) charts in tandem with the main view (as such mutes the ‘exciting angle’ temptation)…

4 Market Principals

4-pThere are four basic principles of price behavior which have held up over time. Confidence that a type of price action is a true principle is what allows a trader to develop a systematic approach. The following four principles can be modeled and quantified and hold true for all time frames, all markets. The majority of patterns or systems that have a demonstrable edge are based on one of these four enduring principles of price behavior. Charles Dow was one of the first to touch on them in his writings.
Principle One: A Trend Has a Higher Probability of Continuation than Reversal
Principle Two: Momentum Precedes Price
Principle Three: Trends End in a Climax
Principle Four: The Market Alternates between Range Expansion and Range Contraction!