One week can be a fluke, two weeks might be a fad, but three weeks is a trend. When it comes to evaluating an player's fantasy value, it normally takes around three weeks to determine what is real vs. what is just noise.
That means if players are trending upward after three straight weeks of strong performances, well, it's time to take notice. But if star players have posted three straight weeks of poor performances, that deserves your attention as well.
These are all factors taken into consideration when composing the weekly fantasy trade value chart. As you start considering trades to improve your team, the trade chart should help you consider the relative value of the players in the deal.