1.(tilastotiede)oletus, jonka mukaan eri syiden todennäköisyydet ovat yhtä suuria silloin, kun niitä ei tunneta
1.(statistics) the difficulty of applying Bayes' theorem is that the probabilities of the different causes are seldom known, in which case it may be postulated that they are all equal (sometimes known as postulating the equidistribution of ignorance)