A Polygraph Is

question 76

Multiple Choice

A polygraph is

• A) an emotion detector.
• B) a foolproof lie detector.
• C) a machine that measures brain reaction.
• D) admitted as evidence in most courtrooms.

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Definitions:

Standardized Test Statistic

A calculated value used to determine the relative distance of a data point or sample from the mean of a population, expressed in terms of the standard deviation of the population.

Positive Differences

The result obtained when subtracting a smaller number from a larger number in each pair of a data set.

Negative Differences

Refers to the results obtained when subtracting a number from another number that is smaller, resulting in a negative value.

Significance Level

A threshold within statistical hypothesis testing that measures the probability of rejecting a true null hypothesis, typically denoted by alpha (α).