Is it true that the purpose of Milgram study on obedience was to find out how many people would obey an authority figure when directly order to violate their own ethical standards?

Yes, that was one of the main purposes of the Milgram study on obedience. The study aimed to investigate the extent to which individuals would obey an authority figure, even when it meant acting against their own moral and ethical beliefs. The results showed that a significant portion of participants were willing to obey authority figures to the point of violating their own conscience.