Question

A group of researchers wants to know whether graduates from different teacher preparation programs are more likely to stay in the profession. they select a stratified random sample of this year's graduates from several programs. the researchers will contact the graduates after \[1\], \[5\], and \[10\] years to see whether they are teaching in those years. what type of observational study is this? choose 1 answer:

Answer 1

The study in the student's question is a longitudinal observational study using stratified random sampling to track the career progress of graduates from different teacher preparation programs over time.

Step-by-step explanation:

The type of observational study described in the student's question is a longitudinal study, which observes the same subjects repeatedly over a period of time. In this case, graduates from different teacher preparation programs are being observed for their stay in the profession over multiple years.

The researchers are utilizing stratified random sampling to select a sample where different teacher preparation programs represent strata, and graduates are randomly selected from each stratum to form the study sample. This method ensures each program is adequately represented and allows the researchers to draw valid conclusions about the entire population of recent graduates from teacher preparation programs.

For example, if a college wanted to create a stratified sample of its student body, it could divide the population into freshmen, sophomores, juniors, and seniors, and then use simple random sampling to select a proportionate number of students from each year. This is what the researchers are doing with the teacher preparation programs, ensuring representation from each program in their study.