What is the opposite of the hasty generalization fallacy?

The opposite of the hasty generalization fallacy is called slothful induction fallacy or appeal to coincidence.

It is the tendency to deny a conclusion even though there is sufficient evidence that supports it. Slothful induction occurs due to our natural tendency to dismiss events or facts that do not align with our personal biases and expectations. For example, a researcher may try to explain away unexpected results by claiming it is just a coincidence.