Figure:
Suppose You Regress the Self-Reported Number of Cigarettes Smoked

question 19

Multiple Choice

Figure:
Suppose you regress the self-reported number of cigarettes smoked per day on Age,Family Size,and Years of Education and that you get the results in Figure 6.2.
$\begin{array}{lc}\text { SUMMARY OUTPUT }\\\\\\\hline \text { Regression Statistier } & \\\hline \text { Multiple R } & 0.070494476 \\\text { R Square } & 0.004969471 \\\text { Adpasted R Square } & 0.001879314 \\\text { Standard Error } & 4.819403326 \\\text { Observations } & 970 \\\hline\end{array}$


$\begin{array}{lccccc} \text { ANOVA }\\\hline & \text { df } & \text { SS } & \text { MS } & F & \text { Significance } F \\\hline \text { Regression } & 3 & 112.0566012 & 37.3522004 & 1.608161442 & 0.185858614 \\\text { Residual } & 966 & 22436.94237 & 23.22664841 & & \\\text { Total } & 969 & 22548.99897 & & & \\\hline\end{array}$

$\begin{array}{lcccccc}\hline & \text { Coefficients } & \text { Standard Error } & t \text { Stat } & \text { P-value } & \text { Lower } 9396 & \text { Upper } 95 \% \\\hline \text { Intercept } & 4.049920982 & 1.042107341 & 3.886280064 & 0.000108739 & 2.004865844 & 6.094976119 \\\text { Age } & 0.015626984 & 0.010365497 & 1.507596119 & 0.131984878 & -0.004714504 & 0.035968471 \\\text { Family Sire } & -0.093093463 & 0.084602383 & -1.100364552 & 0.271447442 & -0.259119103 & 0.072932177 \\\text { Years of Education } & 0.005642075 & 0.06474525 & 0.087142685 & 0.930576157 & -0.121415476 & 0.132699626 \\\hline\end{array}$

$\text { Figure } 6.2$
-Based on the estimates in Figure 6.2,you should conclude that,holding all other independent variables constant,each additional year of age is estimated to be associated with

• A)a statistically significant increase of 1.56 percent in cigarettes smoked per day.
• B)a statistically insignificant increase of 1.56 percent in cigarettes smoked per day.
• C)a statistically significant increase of 0.0156 cigarettes smoked per day.
• D)a statistically insignificant increase of 0.0156 cigarettes smoked per day.

---

Definitions:

Secondary Prevention

Efforts to reduce the impact of a disease or injury that has already occurred, through early detection and appropriate treatment.

Colon Cancer

A type of cancer that occurs in the colon or rectum, part of the digestive system, characterized by the growth of abnormal cells which can invade or spread to other parts of the body.

Transtheoretical Model

A theory of behavioral change that assesses an individual's readiness to act on a new healthier behavior and provides strategies to guide the individual through the stages of change.

Prochaska, DiClemente

Psychologists who developed the Transtheoretical Model of Behavior Change, outlining stages people go through in altering behavior.