Question

select the correct sampling technique that was used. the population of college professors is divided into groups according to their rank (instructor, assistant professor, etc.) and then several are selected from each group to make up a sample. cluster convenience simple random stratified systematic question help: message instructor

Explanation:

Stratified sampling divides the population into subgroups (strata) based on certain characteristics (here, rank of college - professors). Then samples are taken from each subgroup. This matches the described sampling method.

Answer:

stratified