Have you ever tried fitting some pants on the girth of your neck? We want to test the common notion that if a folded waistline of the pants fit the girth of the neck, then it also fits the person's waistline. Within your household, collect 15 sample data from your parents, siblings, other relatives, and close friends and get their waistline's girth (Y) and neck's girth (X) in centimeters. Write the collected data in a table and perform the following: 1. Plot a scatter diagram.

2. Compute the correlation coefficient and interpret the result.

3. Test for significance of the linear relationship between the neck and waistline's girth.

4. Find the regression and interpret the result.

Please do not use excel or any statistical software for the solution.