Final answer:
Master data control plans help regulate transaction processing by calculating control totals and comparing them at different stages, thus ensuring data accuracy.
Step-by-step explanation:
Master data control plans are important mechanisms used in business, particularly within the domain of information systems and accounting. They serve to regulate transaction processing by ensuring the accuracy and consistency of data throughout an entire processing run. By calculating control totals at various points, such as when the data is first collected, after processing, and even during storage, these plans allow businesses to monitor their data for errors or discrepancies. Comparisons of these control totals help in identifying anomalies or issues that may arise during data processing. This practice of monitoring and validating information helps in maintaining data integrity and is a critical aspect of system controls in an organization. Therefore, the statement given is true. Such controls form an integral part of a company's internal control and audit processes.