"To show the opposite" means to demonstrate or display something that is completely different or contrary to what was previously believed or expected. Full definition
The current study showed opposite results for the association of whole - and low - fat yogurt consumption with the incidence of depression. (academic.oup.com)
As the weight came off, some bacterial groups became more abundant, while others showed the opposite pattern. (sciencedaily.com)
By contrast, those who tended towards rules - based morality showed the opposite trend, suggesting that past good deeds or bad deeds were prompting similar behavior later on. (nakedpastor.com)