Q. Which of the following techniques yields a simple random sample (Solved)
1. choosing volunteers from an introductory psychology class to participate
2. listing the individuals by ethnic group and choosing a proportion from within each ethnic group at random
3. numbering all the elements of a sampling frame and then using a random number table to pick cases from the table
4. randomly selecting schools, and then sampling everyone within the school
- c. numbering all the elements of a sampling frame and then using a random number table to pick cases from the table