________ Is a Data Entry Input Control That Involves Summing

question 66

Multiple Choice

________ is a data entry input control that involves summing the first four digits of a customer number to calculate the value of the fifth digit,then comparing the calculated number to the number entered during data entry.

• A)Validity check
• B)Duplicate data check
• C)Closed-loop verification
• D)Check digit verification

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Definitions:

Ameritech

A telecommunications company that was one of the Regional Bell Operating Companies following the breakup of AT&T.

Marginal Cost

The incremental cost of fabricating one more unit of a product or service.

Profit-maximizing Quantity

The point of production where a company reaches its maximum profit, occurring when marginal revenue is equal to marginal cost.

Profit-maximizing Price

The price at which a firm can achieve the highest possible profit.