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?
Definitions:
Spinning Globe
A representation of the Earth that rotates on an axis, often used as a model to illustrate global geography and rotation.
Moon's Gravity
The gravitational force exerted by the Moon, affecting tides on Earth and the motion of spacecraft and objects on the Moon's surface.
Wave Action
The movement and force of water in the form of waves, which can shape coastlines and erode or deposit materials.
Wave Base
The depth at which the action of a wave in an ocean or lake no longer has an effect.
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