What is the purpose of using a hash total?

A hash total serves the specific purpose of verifying the accuracy of a dataset by checking it against a control total. This practice involves taking a set of numerical data, such as transaction amounts, and calculating a hash value or total. This value is then used as a reference point (control total) to ensure that the data has not been altered or corrupted. When the data is re-evaluated, the hash total can be compared to the original control total; if they match, it indicates that the data's integrity is intact, whereas any discrepancy would suggest potential errors or tampering.

In contrast, other options have different purposes that are not related to the function of hash totals. Performing complex calculations may involve various mathematical operations or algorithms but does not relate directly to the validation of data accuracy. Encrypting sensitive information focuses on securing data to protect it from unauthorized access and is distinctly different from the concept of checking totals. Eliminating unnecessary data pertains to data management practices and data cleaning, which also does not concern itself with the validation and accuracy checks that hash totals provide.