In Section 5, we present a clinically used example from a series of free prostate antigen (FPSA) measurement data, which is often used to assess the presence of prostate cancer and other prostate diseases. In closing, we comment on Section 6. 19. McAlinden C, Khadka J, PesudovS K. Statistical methods for conducting compliance studies (comparison of clinical trials) and precision studies (reproducibility or reproducibility) in optometry and ophthalmology. . . .