Regarding trendiness dependency on the time frame (which in my experience seems true), this was posted by Alan Crary:Quote from Daal:
NoDoji,
considering that a high number of traders using different ways to 'interpret' price action or trendlines and how to trade them will virtually guarantee that some of them will be winners over a certain period of time, what kind of evidence do you have that this is a sound method to use for the long-run instead of short-term luck?
By that I mean statistical evidence that trendfollowing works in intraday data
"Just finished an analysis of the SP market. For the analysis I used the SP data from 1989 - 2001. Here's my results:
The data from 1min. resolution per-bar through 30min. resolution per-bar is primarily in a trending mode. If planning on building a trend following system or intraday breakout, then these are the bar intervals I'd review.
The data from 60min. resolution per-bar through 1 week resolution per-bar is primarily in a contra-trend mode. If planning on developing reversal systems, then these are the lengths I'd consider.
The monthly data reverts back to trending mode, so if you need something to time long term investments (like mutual fund infusions), then this is the interval I'd use.(ex. 200 day MA).
The data itself proved to be remarkably stable within the time frames. For example, the 30 min. bars had good trends in 11 of the 13 years. Likewise, the 60 min. bars had good contra-trends also in 11 of the 13 years.
I did this analysis to get ready to build a really good daytrading system. Since daytrading is primarily concerned with the shorter bars, I'll have to look to building a system with the 1-30 min. bars using either a breakout or outright trending idea. "