Life Expectancy an Actuary Wanted to Develop a Model to Predict

question 145

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 (x₁),the cholesterol level (x₂),and the number of points that the individual's blood pressure exceeded the recommended value (x₃).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 + 1.79x₁− 0.021x₂− 0.061x₃ ​ S = 9.47 ​ R−Sq = 22.5% ANALYSIS OF VARIANCE ​ ​
-{Life Expectancy Narrative} What is the coefficient of determination? What does this statistic tell you?

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Definitions:

Eating Disorders

Mental disorders defined by abnormal eating habits that negatively affect a person's physical or mental health.

Childhood Sexual Abuse

A form of sexual abuse involving a child and an older person, often resulting in long-term psychological and emotional impact.

Weight Restoration

The process of gaining back weight lost due to an illness or eating disorder, aiming to return to a healthy weight for recovery.

Anorexics

Individuals suffering from anorexia nervosa, an eating disorder characterized by an obsessive fear of gaining weight and severely restricted food intake.