Exam 7: Qualitative and Quantitative Sampling

Define the following terms -parameter

Professor Johnny Jones draws a systematic sample of 350 churches from all churches and religious institutions in the three Pacific coast states of the continental U.S.and British Columbia.His sampling frame has 35 000 institutions. What is the sampling interval?

Lucy Lively,a coffee aficionado,wanted to draw a sample of people in Ontario who own an authentic,imported Italian espresso coffee maker.There is no list of such people,and there is no reason to believe that they know each other.What type of sampling should Lucy use?

Define the following terms -simple random sampling

In what situations is it appropriate to use a purposive sampling technique?

Define the following terms -statistic

Define the following terms -random sample

Sam Smith,the CEO of a local TV station,recently conducted a study of TV watchers in his area.He obtained a list of all residential customers from the cable TV company's billing list.He selected customers from the 20 000 households on the billing list by taking every fortieth household.A trained interviewer then visited each household and asked detailed questions about the viewing habits of various family members. How large is Sam Smith's sample?

Define the following terms -haphazard sampling

What is the population in random-digit dialing (RDD)? Does it avoid sampling frame problems?

Define the following terms -sample

Professor Mary Mancini studied class level and drinking behaviour at Rocky Mountain University in Red Deer,Alberta.At Rocky Mountain,every student is required to live in one of six 20-story dormitories,and every student has a single room.All dormitory room phone numbers begin with the prefix 747 or 757 (e.g.,phone numbers are 747-0001 to 757-9999).She used the student telephone directory and,after a random start,selected every fifteenth student.She then mailed a questionnaire to the 1000 students selected and had two follow-up postcard reminders.A total of 900 students returned questionnaires.Later,Professor Mancini asked the university registrar's office whether any students were omitted from the directory. What is Professor Mancini's target population?