Identify the type of sampling method used by the researcher in each situation: simple random sampling, systematic sampling, stratified sampling, or cluster sampling.
1. A researcher chose the participants of his study by selecting every 8th member of the population.
2. A researcher interviewed all the teachers in each of 15 randomly selected private schools in Cagayan de Oro City.
3. A researcher interviewed people from each barangay in the municipality of Alubijid for his research on population.
4. A researcher is doing a research work on the students’ reaction to the newly implemented curriculum in mathematics and interviewed every 5th student entering the gate of the school.
5. A researcher randomly selected 15 barangays in a town for her study. She did this by writing the names of each barangay on a piece of paper which she folded and put in a bowl then she draw 15 pieces of paper from the bowl.
6. A researcher selected a sample of ? = 300 from a population of 900 by using the Table of Random Numbers.
7. A researcher interviewed all the nurses in each of the 5 randomly selected private hospitals in Northern Mindanao.
8. A statistician selected a sample of ? = 500 high school students from a private school with 2,500 students. He randomly selected the students from each grade level.
9. A Statistics student did a research on the time spent by Grade 11 and 12 students in playing mobile legends. He randomly selected his subjects by using the Table of Random Numbers.
10. A teacher conducted a study in her school to determine who were better in mathematics: the males or the females.