Hasty generalization, also known as "fallacy of insufficient statistics", "fallacy of insufficient sample", "fallacy of the lonely fact", "leaping to a conclusion", "hasty induction" or "secundum quid", is the logical fallacy of reaching an inductivegeneralization based on too little evidence.
Examples:
"I loved the hit song, therefore I'll love the album it's on." (Fallacious because the album might have one good song and lots of filler.)
"This Web site looks OK to me on my computer; therefore, it will look OK on your computer, too." (My screen size is smaller than yours, and I'm using a computer in a public library, so I can't adjust it!)
"In my lifetime, there has been a leap year every fourth year; therefore, every fourth year, past, present, and future, is a leap year." (Not true; see the leap year article.)
"My dog is black. Therefore, all dogs must be black."
