The Andrews Median Line is a simple tool that can be applied to anything that fluctuates. We can apply the Median Line to the price flow of any instrument in any time frame.
As shown in the chart, the Median Line set simply bisects a price swing using the relationship from any 3 alternating pivots and then projects price back to its median. Think about it, if you have two extremes, (opposites) you must also have a center. When you expand anything out to its extreme, there is a high probability of it returning to its median.