I have to put numbers into a spreadsheet and/or chart to make sense of them. The way the 4 door price curve compares to the 2 door pretty clearly shows that the 2dr base was purposely held low, and the 4dr FE was inflated.
As a man of science, I'd like to see your standard deviation and sample size. Additionally, can you prove a significant difference between the 2-door and 4-door trims with a p-value of less than 0.05 and 90% confidence interval?
All jokes aside, great graph. Would be cool if you could add comparable trims from Jeep, Land Rover, 4Runner on here.