Decide which method of data collection you would use. (INTERVIEW METHOD, QUESTIONNAIRE METHOD, OBSERVATION METHOD, EXPERIMENT METHOD, REGISTRATION METHOD) 1. Salaries of 5 members of an association 2. Effect of radiation in tomatoes 3. Growth of plants without sunlight 4. Mannerism of applicants during interviews 5. Preferred social network sites 7,000 students 6. Behaviour of toddlers during class 7. Challenges encountered by a student with a part-time job 8. Sleeping patterns of infants 9. Effectivity of new medicine 10. Comments of customers regarding the food and service in fast food chain 11. Success story of a famous business icon 12. Effect of a certain food on one's weight. 13. Strategies of 200 teachers of a district 14. Behaviour of persons with mental disorders 15. Pulse rate after a 30-minute exercise
