A computerized method of evaluating a questionnaire comprising a set of questions of a category, wherein the method comprises the step of requesting a response for each question of the set of questions from an auditee, wherein each response is given in form of a quantitative value. The method further comprises the steps of determining an auditee specific statistics value from each quantitative value of each response given by the auditee and of requesting a response for each question of the set of questions from at least one auditor, wherein each response is given by the at least one auditor in form of the quantitative value, and wherein to each auditor an auditor weight factor is assigned which is specific for the auditor and for the category. For each auditor an auditor specific statistics value is determined from each quantitative value of each response given by the auditor.