Which of the following methods uses a 6-month lookback calculation to measure relative strength?

The percentage change method utilizes a 6-month lookback calculation to measure relative strength. This method focuses on the price performance of a security over a specified period, typically by comparing the percentage change in price from the beginning to the end of that 6-month period. This allows traders and analysts to assess how well an asset has performed relative to its price 6 months ago, thus helping them determine whether the asset is gaining strength or weak relative to other assets or benchmarks.

In the context of relative strength analysis, this method is particularly valuable because it directly calculates performance changes over a more extended period, which can provide insights into longer-term trends and investor sentiment. Different techniques might rely on various timeframes, metrics, or interpretations, but the percentage change method specifically aligns with the 6-month lookback for assessing relative strength efficiency.