The Time from the Beginning of Atrial Depolarization to the Beginning

question 5

Multiple Choice

The time from the beginning of atrial depolarization to the beginning of ventricular depolarization is shown on the ECG waveform as the:

• A)QRS complex.
• B)PR interval.
• C)QT interval.
• D)ST segment.

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Definitions:

Independent Variables

Variables in an experiment or study that are manipulated or categorized by the researcher to determine their effect on dependent variables.

Durbin-Watson Statistic

A test statistic used to identify the presence of autocorrelation (correlation of adjacent residuals) in the residuals from a regression analysis.

First-Order Autocorrelation

A statistical measure of the relationship between a variable's current value and its immediate previous value.

Durbin-Watson Test

A statistical method designed to identify the existence of autocorrelation with a single lag in the residuals resulting from a regression study.