Explain how regression and correlation methods are used in biostatistics.

Different Questions and answers should not be combined.
Part A. Explain how regression and correlation methods are used in biostatistics. How does it add to the analysis of biomedical data?
Are there any circumstances where regression and correlation methods would not be relevant in assessing biostatistical data?
How can you use regression and correlation methods as part of the data analysis section of your proposed bio-medical research project?
Part B. Explain the concepts of analysis of variance and how it is used in biostatistics. How does it add to the analysis of biomedical data?
Are there any circumstances where the concepts of analysis of variance would not be relevant in assessing biostatistical data?
How can you use the concepts of analysis of variance as part of the data analysis section of your proposed bio-medical research project?