what is the overall interpretation of a double bottom 
a double bottom is suggestive of a change in direction higher and possibly the start of a new uptrend to put it in buyers sellers terms the sellers have created a downtrend that came to a low point support which led to a rebound or short covering the rebound that follows is considered corrective within the overall downtrend meaning the sellers are still in place and they eventually make another try for the downside however the previous low support level manages to hold again meaning the fundamentals may have changed and the selling pressure may have been exhausted leaving the sellers suddenly on the wrong side of the downward move 