Which of the Following Statements Is True

question 52

Multiple Choice

Which of the following statements is true?

• A) Dummy variables are used to incorporate categorical variables into a regression model.
• B) You should use one fewer dummy variables than are categories for the qualitative variable in question.
• C) It is appropriate to compute a correlation coefficient for the relationship between a dependent variable and a dummy variable.
• D) All of the above are true.

Comprehend how the design of a study affects variable classification.

Grasp the concept of how personal traits or behaviors can influence preferences or outcomes.

Understand the importance and role of hypothesis in guiding research design and interpretation of results.

Recognize how external factors (such as natural disasters) impact psychological states or behaviors.

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Definitions:

Population Proportions

The fraction or percentage of items in a particular category within the entire population.

Parents

In genetics, the organisms that give rise to offspring, but in programming (especially object-oriented programming), it refers to the superior or controlling classes in hierarchical relationships.

Defect

A flaw or imperfection in a product, process, or system that fails to meet specified criteria.

Proportion

A statistical measure that indicates the fraction of the total that possesses a certain attribute or characteristic.