This is the 10237th most frequent Portuguese word.
errados
Wrong; incorrect.
This usage of 'errados' is an adjective, describing the incorrect state of the calculations.
Os cálculos estavam errados.
The calculations were wrong.
Here, 'erradas' functions as an adjective related to the feminine plural noun 'informações' to indicate incorrectness.
Algumas informações que recebemos estavam erradas.
Some information we received was wrong.
In this context, 'errados' qualifies the noun 'pensamentos', showing it as in a mistaken condition.