Life Expectancy an Actuary Wanted to Develop a Model to Predict

question 139

Essay

Life Expectancy An actuary wanted to develop a model to predict how long individuals will live. After consulting a number of physicians, she collected the age at death ( y ), the average number of hours of exercise per week ( x ₁), the cholesterol level ( x ₂), and the number of points that the individual's blood pressure exceeded the recommended value ( x ₃). A random sample of 40 individuals was selected. The computer output of the multiple regression model is shown below. THE REGRESSION EQUATION IS y = 55.8 + 1.79 x ₁ - 0.021 x ₂ - 0.061 x ₃ S = 9.47 R - Sq = 22.5% {Life Expectancy Narrative} What is the coefficient of determination? What does this statistic tell you?

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Definitions:

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The non-financial costs associated with actions or decisions, including effort, time, and opportunity costs that impact individuals' or companies' behaviors.

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