44. The following is a quotation from Sir Ronald A. Fisher, a ars, famous statistician. For the logical fallacy of believing that a hypothesis has ou been proved true, merely because it is not contradicted by the available facts, has no more right to insinuate itself in statistics than in other kinds of scientific reasoning. .. . It e would, therefore, add greatly to the clarity with which the tests ould of significance are regarded if it were generally understood IS that tests of significance, when used accurately, are capable to of rejecting or invalidating hypotheses, in so far as they are cent contradicted by the data; but that they are never capable of establishing them as certainly true