Payment-Processing Services That Authorize Online Credit Card Transactions While Customers

question 79

Multiple Choice

Payment-processing services that authorize online credit card transactions while customers wait are called ____.

• A) merchant accounts
• B) third-party fulfillment houses
• C) ASPs
• D) payment gateways

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Definitions:

Confidence Interval

A variety of numerical values, obtained from statistical analysis of a sample, which probably includes the value of an unseen population characteristic.

Standard Deviation

A measure of the amount of variation or dispersion of a set of values, calculated as the square root of the variance.

Variance

A measure of the dispersion of a set of data points in a population, showing how much the data diverge from the average value.

Degrees of Freedom

The number of independent values or quantities which can vary in the calculation of a statistic, typically in the context of hypothesis testing.