I am going to ask some questions that may seem elementary, but I feel it's best to ask them. For now... I mentioned previously about looking for a minimum slope to see a trend. But in addition to this, you can look at the same chart and stretch or shrink it vertically and the trend will look bigger or smaller. I will now post 3 pictures of the same chart, differing only by the amount I stretched it vertically. Thoughts? Is there a "normal"?