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...ly have many questions over the next few weeks and want to thank you guys in advance for your help. I'm a cancer researcher and I need to learn R to complete a few projects. I have an introductory background in Python. My questions at the moment are based on the following sample input file: *Sample_Input_File* characteristics_ch1.3 Stage: T1N0 Stage: T2N1 Stage: T0N0 Stage: T1N0 Stage: T0N3 "characteristics_ch1.3" is a column header in the input excel file. "T's" represent stage and "N's" represent degree of disease spreading. I want to create output that...