The OLS Residuals

question 32

Multiple Choice

The OLS residuals

• A)can be calculated using the errors from the regression function.
• B)can be calculated by subtracting the fitted values from the actual values.
• C)are unknown since we do not know the population regression function.
• D)should not be used in practice since they indicate that your regression does not run through all your observations.

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Definitions:

Anorexia

An eating disorder characterized by an abnormally low body weight, intense fear of gaining weight, and a distorted perception of body weight.

Eating Disorder Examination

A comprehensive, semi-structured interview used for diagnosing and assessing the severity of eating disorders.

Reliability

The ability of a measurement tool to give the same measurement for a given thing every time. Its usefulness partly depends on this attribute.

Validity

The ability of a measurement tool to measure what it purports to measure. A rigid ruler would be reliable; but it would be useless as a measure of temperature.