Waec Data Processing Past Questions
Question 6
Which of the following is true about digital computers.
- A. They consist of magnetic core memory.
- B. they understand data as a continuous measurement of a physical quantity.
- C. they represent numbers through a string of binary digits.
- D. they are mainly used for scientific purposes.
Question 7
Which of the following is not a source of data collection.
- A. observation
- B. interview
- C. questionnaire
- D. classification
Question 8
The operation of checking input data against specified criteria is referred to as.
- A. data verification
- B. data validation
- C. data cross check
- D. data control
Question 9
Convert 478 to its binary equivalent.
- A. 100111\(_2\)
- B. 110011\(_2\)
- C. 10001\(_2\)
- D. 1111011\(_2\)
Question 10
Which of the following persons invented the punch card machine?
- A. Blaise Pascal
- B. Gottfried Leibniz
- C. J. Prosper Eckert
- D. Dr. Herman Hollerith
