Trend, taken as a slope as in "trend line," is the average rate of change of price with respect to time.Quote from TSGannGalt:
"What is a trend?"
A question like, "Do trends exist?" is an oversimplification. The real issue is whether or not future price can be determined on the basis of past price action. Just because price has drawn itself in a certain pattern over a previous timeframe, doesn't mean it has done so due to a tendency that will continue in the future.
So, for the purpose of making money, the answer is that trends don't exist.
