Across
- 3. Involve asking individuals a set of predetermined questions.
- 6. Dividing the population into subgroups or strata.
- 7. It involves quantities and amounts, and is used to perform mathematical operations.
- 9. Direct interaction between a researcher and a participation.
- 10. Researchers directly observe and record behavior or events.
Down
- 1. It is non-numerical and used to categorize or describe properties
- 2. The set containing only elements common to two or more sets (overlap).
- 4. Selecting every nth individual from a random start.
- 5. Researchers manipulate variables to observe the effect of the outcome.
- 8. The set containing all elements from two or more sets (combination).