Dear R users,

I have seven regression lines I´d like to compare, in order to find out if
these are significatively different. The main problem is that these are
curves,  non normal, non homogeneous data, I´ve tried to linearize them but
it has not worked. So I´d like to know if you know any command or source in
R which explains how to perform this kind of comparison.

Thanks in advance for your help!

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