11. A type I error occurs when convicting an innocent person ( a miscarriage of justice ). 12. This probability is known as type I error . 13. Therefore it is the probability of making a type I error given that the null is true. 14. Of the 900 incorrect hypotheses, 5 % or 45 will be accepted because of type I errors . 15. Martin D . Weiss, president of the Weiss Group, got high marks for avoiding Type I error . 16. A type I error is a false positive, thinking that an effect is there, when it is not. 17. The reduction of the type I error rate has been labelled as the " conservatism " of classical methods. 18. Statistical methodologists have argued that QCA's strong assumptions render its findings both fragile and prone to type I error . 19. Testing a hypothesis suggested by the data can very easily result in false positives ( type I errors ). 20. Thus, FDR procedures have greater type I errors , i . e ., rejecting null hypotheses that are actually true.
