What Can Be Said About R² When a Linear Regression

question 10

Multiple Choice

What can be said about R² when a linear regression results in an ANOVA table with a large total sum of squares and a relatively small model sum of squares?

• A) R² will be small because the explanatory variable explains a small portion of the variability in the outcome.
• B) R² will be large because the model explains most of the variability in the outcome.
• C) R² will be small because the model explains a small portion of the variability in the explanatory variable.
• D) R² will not be affected because it does not involve the model sums of squares or the total sums of squares.

Recognize the importance and methods of ensuring validity (internal and external) and reliability in research.

Identify the role and implications of deception in psychological research and how it affects ethical considerations.

Evaluate the ethical considerations surrounding animal research and the guidelines set by psychological associations.

Comprehend the procedures and significance of replication and meta-analysis in psychological research.

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Definitions:

Schizophrenia

A mental disorder characterized by disturbances in thought, perception, and behavior, leading to hallucinations, delusions, and disorganized speech.

Suicide

The act of intentionally causing one's own death.

Prevalence

The proportion of a population found to have a particular condition or characteristic at a specific time.

Depression

A common and serious mood disorder characterized by persistent feelings of sadness, emptiness, or hopelessness, often accompanied by physical symptoms.