SOLUTION: A statistics instructor is interested in the average weekly study time for his students. He teaches two sections in Spring and randomly chooses 15 students from the first section a

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Question 1047436: A statistics instructor is interested in the average weekly study time for his students. He teaches two sections in Spring and randomly chooses 15 students from the first section and 18 students from the second section. This sampling method is called
cluster
convenience
stratified or
systematic
I feel the answer is convenience since it is using students that are readily available. Stratified uses a proportionate number of students, systematic uses an nth piece of data, although I feel it could also be cluster. Please help clarify!
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
A statistics instructor is interested in the average weekly study time for his students
His students ... the population
A stratified sample results when a population is split into at least two non-overlapping sub-populations.