I need help!!!! Thank you. A. Explain the concepts of linear regression. Answer the next five questions. A.a. Describe dependent and independent variables. ZyBooks 5.1 A.b. Explain the purpose of the least squares method and residuals. ZyBooks 5.2 A.c. What are the assumptions of linear regression? ZyBooks 5.3 A.d. What two plots would you use to determine linearity? ZyBooks 5.3 A.e. R and R?. ZyBooks 5.4 e. 1. What is the relationship between the Correlation (R) and Coefficient of Determination (R2)? e.2. Interpret R2 = 0.90 for a person's height (x) versus number of books read (y). B. Describe an example from your personal or professional experiences where you (could have) applied linear regression. You can try ChatGPT or web research with this question: "Describe a professional example using linear regression as an [your job title]." Provide a reference. ZyBooks, a Wiley brand, (2021). QNT/375T: Business Data Analytics