Exam 7: Qualitative and Quantitative Sampling

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 .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. About how many students are listed in the Rocky Mountain University student telephone directory?

Define the following: -sampling distribution of sample means

A __________ is to a sample what a ___________ is to a population.

Define the following: -cluster sampling

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: -confidence intervals

Define the following: -sequential sampling

Define the following: -sampling ratio

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 .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 Mary Mancini's sampling frame?

Define the following: -sampling error

Define the following: -sociogram

Define the following: -central limit theorem

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. What is the sampling frame in Sam Smith's study?

Adam Andrews of the Quit Today Institute wants to know how many students at the local university smoke cigarettes.Adam obtains a list of phone numbers for every student enrolled at the college from the Dean.He selects students from the 24 000 on the list by taking every fiftieth student,giving him a sample of 480 students. What sampling method is Adam Smith using?

Which of the following terms denotes the practice of adjusting the sampling ratio at various stages in the process of cluster sampling?

Which of the following terms best describes people who engage in illegal or concealed activities such that very often a researcher must use purposive sampling in order to find them?

If a confidence interval ranges from 72 to 76 per cent,what is the implicit margin of error?

Which of the following is NOT something a researcher's decision about the best sample size depends on?

Why is it important to have an accurate sampling frame?

Define the following: -probability sampling