Professor Howlick is studying incoming (freshmen) student dr…

Professor Howlick is studying incoming (freshmen) student drinking behavior at Boozemen State University in Boozemen, Kansas. Every incoming freshman is required to have a university email address. After obtaining a list of all incoming freshmen students email addresses, he numbered every email address from 1 to 4,000. Using a random-number table, he obtained a sample of 200 freshman email addresses. He then emailed students requesting them to take an online survey. He also had two follow-up email reminders. A total of 180 students took the online survey. What type of sampling did Professor Howlick use?

Michelle Stump is an honor student and wants to investigate…

Michelle Stump is an honor student and wants to investigate how “love” was portrayed in 1970s disco music. Ms. Stump analyzed the lyrics of all disco music in the Billboard Top 100 from January 1976-December 1981. What kind of research is Ms. Stump conducting?

Vince wants to draw a sample of people in Illinois who own 1…

Vince wants to draw a sample of people in Illinois who own 1960s Schwinn Sting-Ray children’s bicycles, a collector’s item. There is no list of the people, but there is an informal network (acquaintances) of Sting-Ray owners. What type of sampling should Vince use?