The data below are the ages and systolic blood pressures of 9 randomly selected adults. Construct a scatter plot for the data. Find the equation of the regression line for the given data, linear correlation coefficient, r, and the coefficient of determination, r2,.
Age x 38 41 45 48 51 53 57 61 65
Pressure y 116 120 123 131 142 145 148 150 152
Based on your findings, is a a predictor of blood pressure?
Step by step method for regression analysis is discussed here. Regression coefficients, coefficient of determination, scatter diagram and significance of regression model are explained in the solution.