Weekly action can smooth out minor noise. If an investor is looking only at daily charts, it's easy to get too focused on moves in the latest 6-1/2-hour session. Worse yet, if an investor gets too ...

Red is linear and on the left axis, blue is log and on the right. The Motley Fool has some good text, but I like pictures, so here’s how I look at it. The data should drive the charts.

LONDON - OCTOBER 16: A general view of the Limited Edition ... which defines a negative weekly chart. The stock will also confirm a death cross on its daily chart next week.