16. Which of the following is not a data processing technique?
a) Data mining
b) Data validation
c) Data encryption
d) Data analysis
17. Which of the following is not an example of data analysis?
a) Statistical analysis
b) Regression analysis
c) Data visualization
d) Data entry
18. What is the purpose of data validation 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
19. Which of the following is not a data validation technique?
a) Range check
b) Format check
c) Length check
d) Sorting
20. Which of the following is not an example of data entry error?
a) Transposition error
b) Omission error
c) Duplication error
d) Encryption error
