So as you can see, it doesn't matter how good people were at the test overall, represented by the score on the X-axis at the bottom there; people were approximately the same in terms of their confidence when they were incorrect.
Como pueden ver, no importa qué tan buena sea la puntuación de las personas en la prueba, representada por la puntuación en el eje X, en la parte inferior; las personas mostraron aproximadamente la misma confianza cuando se equivocaron.