Refer to the following paragraph to answer the questions below.
Professor Alco Drunkman studied class level and drinking behavior at Wild State University in Boozville, Texas. Every student is required to live in one of six twenty-story-tall dormitories, and has a single room. All dormitory room phone numbers began with the prefix 747 or 757 (e.g., phone numbers are 747-0001 to 757-9999). He used the student telephone directory, and after a random start selected every 15th student. He then mailed a questionnaire to the 1,000 students selected and had two follow-up postcard reminders. A total of 900 students returned questionnaires. Later, he asked the university registrar whether any students were omitted from the directory.
-Professor Drunkman's questionnaire asked each student to name every other student with whom they drank during the past two months. Dry Temperance, his assistant, sent a questionnaire to each person named by students in the first sample in which the same question was asked. Ms. Temperance next sent a questionnaire to everyone named as a drinking partner in the second sample and so on until she had sent out ten different waves of questionnaires. She then drew up a list of all students who drank with anyone else that returned a questionnaire, and used it as a sample for a study on drinking networks on campus. What kind of sampling was Ms. Temperance using?

Question

Refer to the following paragraph to answer the questions below. 
Professor Alco Drunkman studied class level and drinking behavior at Wild State University in Boozville, Texas. Every student is required to live in one of six twenty-story-tall dormitories, and has a single room. All dormitory room phone numbers began with the prefix 747 or 757 (e.g., phone numbers are 747-0001 to 757-9999). He used the student telephone directory, and after a random start selected every 15th student. He then mailed a questionnaire to the 1,000 students selected and had two follow-up postcard reminders. A total of 900 students returned questionnaires. Later, he asked the university registrar whether any students were omitted from the directory.
-Professor Drunkman's questionnaire asked each student to name every other student with whom they drank during the past two months. Dry Temperance, his assistant, sent a questionnaire to each person named by students in the first sample in which the same question was asked. Ms. Temperance next sent a questionnaire to everyone named as a drinking partner in the second sample and so on until she had sent out ten different waves of questionnaires. She then drew up a list of all students who drank with anyone else that returned a questionnaire, and used it as a sample for a study on drinking networks on campus. What kind of sampling was Ms. Temperance using?

Quizplus · Accepted Answer

Snowball sampling is used when researchers start with a small group of known individuals and then expand the sample by asking those initial participants to identify others who meet the criteria of the research. In this scenario, Ms. Temperance used the initial group of students who responded to the questionnaire to identify additional students who drank, and then continued this process through several waves, which is characteristic of snowball sampling.

Refer to the Following Paragraph to Answer the Questions Below