1. I use the hist (Boston $tax breaks=15), set the breaks, but the displayed image is not 15 breaks,



I also changed 3,10,25... 100 and a series of Numbers, comply with the code, do not tally with the code, bosses know why appear such circumstance?


2. Use the hist (), if we can have a method to get the plume in a particular column value? Such as [200400] between the frequency of the specific number? Or we can only according to the image to get a general trend of distribution?


(3) in a subject, it is necessary to compare the original table of each predictor in the range, and after conditions after the screening to present the range of each predictor of my method is:



But this present value more disorderly, and need to switch the view to compare, whether can you have a way to put the two different range of the same predictor compare together? Probably the following:



Thank you for your answer! Be very grateful!