In Analyzing the Residuals to Determine Whether the Simple Regression

question 5

Multiple Choice

In analyzing the residuals to determine whether the simple regression analysis satisfies the regression assumptions,which of the following is true?

• A)The histogram of the residuals should be approximately bell-shaped.
• B)The scatter plot of the residuals against the dependent variable should illustrate that the variation in residuals is the same over all levels of .
• C)Neither A nor B are true.
• D)Both A and B are true.

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Definitions:

P Wave

The initial wave on an electrocardiogram representing atrial depolarization, or the electrical activity that triggers atrial contraction.

QRS Complex

A series of deflections in an electrocardiogram representing the electrical activity associated with the ventricular contraction.

Ventricular Contraction

The phase of the cardiac cycle where the ventricles contract, pumping blood out of the heart into the pulmonary and systemic circuits.

Stroke Volume

The volume of blood pumped out by the left ventricle with each heartbeat.