Data Analysis Flashcards
7 cards from real CPE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Data Analysis flashcards as text
In cardiovascular analysis, what tracing feature is most often associated with a significant response to a test question?
Answer: Rise in relative blood pressure and changes in pulse amplitude
A rise in relative blood pressure combined with changes in pulse amplitude (and often rate) is the classic cardiovascular indicator evaluated when scoring polygraph charts.
Which scoring approach assigns different weights to physiological channels based on their empirical validity in detecting deception?
Answer: Empirical Scoring System (ESS)
The Empirical Scoring System (ESS) assigns differential weights to physiological channels (EDA, respiration, cardiovascular) based on research-derived accuracy rates for each channel.
A 'persistent augmented response' on a relevant question across multiple chart presentations is most consistent with which scoring interpretation?
Answer: Strong deceptive indication
When a relevant question consistently produces augmented responses across repeated chart presentations, it is scored as a strong deceptive indicator under standard numerical scoring rules.
What is the significance of 'habituation' when analyzing polygraph data across multiple chart runs?
Answer: It may diminish comparison question responses, reducing their diagnostic utility
Habituation can reduce the magnitude of comparison question responses over repeated presentations, potentially compromising their effectiveness as a physiological baseline for comparison.
During data analysis, which respiratory feature is considered a valid response indicative of a significant reaction rather than an artifact?
Answer: A suppression of respiratory amplitude onset immediately after the relevant question
A suppression of respiratory amplitude immediately following a relevant question stimulus is considered a valid physiological response, distinct from movement or voluntary artifacts.
When a polygraph examiner notes a 'staircasing' pattern in the cardiograph tracing, what does this most likely indicate?
Answer: Increasing blood pressure across multiple consecutive relevant questions
A staircasing pattern — a step-wise upward trend in the cardiograph — typically indicates mounting cardiovascular arousal across consecutive relevant questions, which is analytically significant.
In the Predictive Table Analysis (PTA) approach, decisions are based primarily on:
Answer: Statistically derived probability tables correlating score totals to accuracy rates
PTA uses empirically developed probability tables that map numerical score totals to likelihood ratios and decision accuracy rates to guide the examiner's final determination.