Determine the appropriate sampling techniques used for each scenario. 1. A researcher is interested in studying the effects of diet on the attention span of third-grade students in a large city. There are 1,500 third-graders attending the elementary schools in the city. The researcher selects 150 of these third- graders, 30 each in five different schools, as a sample for study. 2. The principal of an elementary school wants to investigate the effectiveness of a new U.S. history textbook used by some of the teachers in the district. Out of a total of 22 teachers who are using the text, she selects a sample of 6. She plans to compare the achievement of the students in these teachers’ classes with those of another 6 teachers who are not using the text.
Determine the appropriate sampling techniques used for each scenario.
1. A researcher is interested in studying the effects of diet on the attention span of third-grade students in a large city. There are 1,500 third-graders attending the elementary schools in the city. The researcher selects 150 of these third- graders, 30 each in five different schools, as a sample for study.
2. The principal of an elementary school wants to investigate the effectiveness of a new U.S. history textbook used by some of the teachers in the district. Out of a total of 22 teachers who are using the text, she selects a sample of 6. She plans to compare the achievement of the students in these teachers’ classes with those of another 6 teachers who are not using the text.
Thank you!
Step by step
Solved in 2 steps
