Explain why the following will not lead to random samples of t he desired popula

Question

Explain why the following will not lead to random samples of t he desired populations a. To determine what the average person spends on a vacation, a researcher interviews passengers on a luxury cruise. b. To determine the average income of its graduates 10 years after graduation, the alumni office of a university sent questionnaires in 2017 to all the members of the class of class 2007 and bases its estimate on the questionnaires returned. c. To determine public sentiment about certain import restrictions, an interviewer asks voters: "Do you feel that this unfair practice should be stopped?"

Explanation / Answer

Answers

?a.) Since the researcher interviews only the passengers travelling on a luxury cruise , hence the sample is not the represnentative of the whole population.

b.) Since the researcher is giving questionaires to all the students of class 2007 and the resaerch is taking place in 2017, hence the sample is not a random sample.

c.)Snce the researcher is interviewing only voters i.e. persons having age 18+, hence the sample is not a random sample.

Related Questions

Navigate

• Browse (All)
• Browse E
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.