A Least Squares Line of Regression Has Been Fitted to a Scatterplot;

question 112

Multiple Choice

A least squares line of regression has been fitted to a scatterplot; the model's residuals plot is shown. Which is true?

• A) The linear model is poor because the correlation is near 0.
• B) None of these.
• C) The linear model is appropriate.
• D) The linear model is poor because some residuals are large.
• E) A curved model would be better.

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Definitions:

Criterion Validity

The extent to which a measure correlates with an independent criterion (standards) considered as the representing the same construct.

Construct Validity

The extent to which a test measures what it claims to measure, reflecting the accuracy of operationalizing a concept or construct.

Gifted Range

A classification in educational psychology referring to individuals, especially children, who demonstrate outstanding aptitude or competence in one or more domains.

Lifespan

The maximum or typical duration of life of an organism, or the period during which a living thing exists, from birth to death.