A Researcher Might Delete a Variable Before Analyzing the Data

question 28

Multiple Choice

A researcher might delete a variable before analyzing the data when

• A) the variable shows the expected relationship with the independent variable, but another variable does not.
• B) the statistical analysis reveals that the variable did not have a significant impact on the independent variable.
• C) a reliability analysis indicates that the variable does not measure the same thing that other variables, designed to measure the same conceptual variable, do.
• D) the relationship of the variable to the independent variable is not in the predicted direction.

---

Definitions:

Smoking-Related Deaths

Deaths that can be directly attributed to smoking, including diseases such as lung cancer, chronic obstructive pulmonary disease (COPD), and heart disease.

Relative Risk

The risk a person has for a particular disease compared with the risk of other people who do not have that person’s condition or lifestyle.

Nonsmokers

Individuals who do not smoke cigarettes and are not exposed to the habit of inhaling smoke from combustible tobacco products.

Positive Reinforcer

A stimulus which, when presented after a behavior, increases the likelihood of that behavior being repeated.