Exam 7: The Logic of Sampling

Robinson is interested in studying the family dynamics of current gang members.What sampling method should he likely employ if he hopes to complete his research?

In his qualitative research project,Chris is conducting an interview study among a white supremacist group on campus.Chris initially focuses on the group's friendship networks to determine membership and participation.In the course of his research,however,he finds out there are university administrative officials who are also affiliated with this group.Chris then decides to expand his sample to include these university officials and other students that they interact with.This sampling method which evolves and directs the sampling in certain directions is known as

Another term for snowball sampling methods is:

A knowledgeable and reliable informant is extremely important when performing snowball sampling

Sampling error reflects

If a household has more than one telephone listed in a directory,both should be included in the sampling frame.

You are doing research on hospital personnel including orderlies,technicians,nurses,and doctors.You want to be sure you draw a sample that has cases in each of the personnel categories.You want to use nonprobability sampling.An appropriate strategy would be

To calculate sampling error,a researcher needs to utilize the parameter of interest,the standard error,and:

If you were performing research within a police department and you wanted to ensure that an equal number of officers from each rank and division were included,but you want to use a method of selecting them based on probability,what would you choose as your method?

Within a local college,sociology majors constitute 20% of freshmen,20% of sophomores,30% of juniors,and 25% of seniors.Jennifer wants to make sure that her sample proportionally matches the population of sociology majors.Which method of sampling should she employ to be successful?

Stratification represents a modification to rather than an alternative to simple random sampling and systematic sampling.

Walker took a systematic sample from the list of members in his car club by selecting every sixth member.The list of members is known as the

Through a review of records,Rebecca was able to determine that the mean age of the population she was studying was 23.4 years old.This is known as a(n)

What is the basic logic of probability sampling? How do such concepts as homogeneity,heterogeneity,sampling bias,representativeness,and probability of selection fit into this logic?

Describe and illustrate each of the following types of nonprobability sampling: a)convenient sampling; b)purposive (judgmental)sampling; c)quota sampling; and d) snowball sampling.

Multistage sampling designs tend to have smaller sampling errors than single-stage sampling designs.

When people selected for a sample are not typical or representative of the larger population from which they have been selected,we have

The statistical computations typically used by social scientists assume

The study of deviant cases is an example of a purposive study.