Hasty generalization (fallacy of insufficient statistics, fallacy of insufficient sample, fallacy of the lonely fact, leaping to a conclusion, hasty induction) is the logical fallacy of reaching a 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 leap year article.)
"My dog is black. Therefore, all dogs must be black."
... 1506, on the death of his father, Charles inherited the Netherlands and Franche-Comté. After the death of his grandfather Ferdinand in 1516, Charles became joint-king of ...