In a Simple Linear Regression Model, the Variance of the Error

question 37

Multiple Choice

In a simple linear regression model, the variance of the error term $\varepsilon$ is assumed to be

• A)the same for all values of x
• B)zero
• C)increasing as x values increase
• D)-1
• E)none of the above

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Definitions:

Cognitive Appraisal Theory

A model of emotion stating that a person's cognitive response to a situation determines their emotional experience.

Cognitive Dissonance Theory

A theory proposing that people experience discomfort (dissonance) when their beliefs or behaviors are inconsistent, often leading to a change in one to reduce the dissonance.

Cannon-Bard Theory

A theory of emotion that argues emotions and physiological responses occur simultaneously and independently, rather than one causing the other.

James-Lange Theory

A theory of emotion suggesting that emotions occur as a result of physiological reactions to events, implying that physiological arousal precedes the experience of emotion.