TABLE 17-6 A Weight-Loss Clinic Wants to Use Regression Analysis to Build

question 101

Multiple Choice

TABLE 17-6
A weight-loss clinic wants to use regression analysis to build a model for weight loss of a client (measured in pounds) .Two variables thought to affect weight loss are client's length of time on the weight-loss program and time of session.These variables are described below:
Y = Weight loss (in pounds)
X₁ = Length of time in weight-loss program (in months)
X₂ = 1 if morning session,0 if not
X₃ = 1 if afternoon session,0 if not (Base level = evening session)
Data for 12 clients on a weight-loss program at the clinic were collected and used to fit the interaction model:
Y = β₀ + β₁X₁ + β₂X₂ + β₃X₃ + β₄X₁X₂ + β₅X₁X₃ + ε
Partial output from Microsoft Excel follows:
Regression Statistics ANOVA
F = 5.41118 Significance F = 0.040201
-Referring to Table 17-6,what is the experimental unit for this analysis?

• A)a clinic
• B)a client on a weight-loss program
• C)a month
• D)a morning,afternoon,or evening session

---

Definitions:

Inequality Principle

A concept in social and political philosophy suggesting that social or economic inequalities are justified only if they benefit the least advantaged members of society.

Institutions

Established organizations or systems in society with specific purposes and roles, such as educational, religious, or governmental entities.

Well-Ordered Society

A society in which there are mutually accepted principles of justice governing the basic structure of the main institutions.

Morally

Pertaining to principles of right and wrong in behavior; ethical.