[R] ivprobit what are formula1 and formula2

Betty Betty aleminesh57 at gmail.com
Tue Mar 15 14:19:46 CET 2016

Dear All,
Can some one explain to me what exactly is formula1 and formula2 in the
ivprobit(formula1, formula2, data = list(), ...).
The manual for ivprobit has quite limited information and i found it
difficult to understand.
Thank you very much!

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