| Label | Id | |
|---|---|---|
| adoptee study | PROC:Research Activity | |
| adoptive study | PROC:Research Activity | |
| household survey | PROC:Research Activity | |
| organization as study subject | PROC:Research Activity | |
| program as study subject | PROC:Research Activity | |
| study design, planning, execution, and result | PROC:Research Activity | |
| statistical study design | PROC:Research Activity | |
| factorial design | PROC:Research Activity | |
| Population Study (research activity) | PROC:Research Activity | |
| population studies | PROC:Research Activity | |
| Population Study | PROC:Research Activity | |
| sample by method of selection | PROC:Research Activity | |
| Simple Random Sampling | PROC:Research Activity | |
| simple random sample | PROC:Research Activity | |
| stratified random sample | PROC:Research Activity |