Data Tools

I haven't tried the 4 quadrant tool yet, but I am interested in trying it out. It seems like it is pretty simple to plot the data, and it provides a good visual.
I have to agree with Kathy that the wagon wheel is a little more confusing. Personally, I think the same data plotted on a bar graph would provide a better, more clear visual. That could just be me, and my own personal preference, though. Everyone sees things differently, so this may make more sense to some. Do any of you prefer this visual over a bar graph?
What I like most about the "5 Whys" tool is that it is based on collaboration. I often find myself wondering why, why, why. I would love to sit down with a group to collaborate and share ideas. Our school is a focus school, and I am constantly wondering why. I feel like people must just assume that it's the teachers. But our school is filled with wonderful, intelligent, dedicated teachers who are giving all they have, and our test scores are still low. It would be interesting to have the whole staff use this tool, and see what we come up with.
I like the process of the fishbone tool: brainstorm, analyze, and reflect, but again, the visual doesn't really work for me. I think I would just come up with a list and put the items in order.