Mathematics · Biostatistics and Regression

Which of the following statements regarding statistical tools used to assess relationships is/are true? A. For assessing agreement between two quantitative variables, Cohen's Kappa is used. B. The residuals in a ordinary linear regression relationship should follow a normal distribution. C. For assessing the strength of relationship between a binary exposure and a binary outcome, relative risk can be used. D. When the dependent variable is quantitative and the independent variable has a non-linear relationship with it, curvilinear regression can be performed. E. There are exactly three parameters required for expressing a simple linear relationship between one dependent and one independent variable. Choose the most appropriate answer from the options given below: