The Residuals Plot for a Linear Model Is Shown

question 35

Multiple Choice

The residuals plot for a linear model is shown. Which is true?

• A) The linear model is no good since some residuals are large.
• B) The linear model is no good because of the curve in the residuals.
• C) The linear model is okay because the association between the two variables is fairly strong.
• D) The linear model is okay because approximately the same number of points are above the line as below it.
• E) The linear model is no good since the correlation is near 0.

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Definitions:

Phase Voltage

The voltage measured across a single component in a multi-phase system.

Line Voltage

The voltage measured across two phases in a polyphase system, typically higher than the voltage of any single phase.

Three-Phase Voltages

Voltages derived from a three-phase power system, characterized by three alternating currents that differ in phase by one-third of a cycle.

Out Of Phase

The condition in which two components do not reach their positive or negative peaks at the same time.