It's certainly an incorrect prediction if I roll a six. You didn't simply state the odds and leave it at that, you actually made a prediction. Is it a "bad" prediction? Depends on how you're defining "good" vs. "bad" predictions. If the quality of the prediction is not based on the outcome (i.e. whether the prediction is correct), but is instead based on the odds themselves, then that's a conversation that leads to "bad but correct" predictions.