The definition of Anecdotal Evidence, via Wikipedia:

(2) Evidence, which may itself be true and verifiable, used to deduce a conclusion which does not follow from it, usually by generalizing from an insufficient amount of evidence. For example “my grandfather smoked like a chimney and died healthy in a car crash at the age of 99″ does not disprove the proposition that “smoking markedly increases the probability of cancer and heart disease at a relatively early age”. In this case, the evidence may itself be true, but does not warrant the conclusion.

(more…)