21. What is the purpose of data cleaning in the data processing cycle?
a) To store the data for future use
b) To protect the data from unauthorized access
c) To ensure the data is processed accurately
d) To retrieve the data when needed
22. Which of the following is not a method of data cleaning?
a) Removing duplicates
b) Correcting errors
c) Encrypting data
d) Standardizing data
23. What is the purpose of data transformation in the data processing cycle?
a) To store the data for future use
b) To protect the data from unauthorized access
c) To ensure the data is processed accurately
d) To retrieve the data when needed
24. Which of the following is not a method of data transformation?
a) Aggregation
b) Filtering
c) Sorting
d) Encryption
25. What is the purpose of data storage in the data processing cycle?
a) To store the data for future use
b) To protect the data from unauthorized access
c) To ensure the data is processed accurately
d) To retrieve the data when needed
