Exam 10: Sampling in Quantitative, Qualitative, and Mixed Research

What is the definition of a sampling error?

Even though most researchers would much prefer to be able to do a census of their study population, sampling is necessary because:

The purpose of _____ is to generate a set of groups that are similar on all possible factors at the beginning of an experiment.

A __________ is a numerical characteristic of a sample and a ____________ is a numerical characteristic of a population.

In which type of mixed research sampling is this true: "quantitative and qualitative data are collected one after the other on different participants who are selected to represent the same population under investigation".

A researcher wants to study adolescents who are homeless. He builds his sample by searching the streets, identifying an adolescent to interview, and then, asks the adolescent where the researcher can find another homeless adolescent to interview. What sampling method did this researcher use?

The symbol for the sample size is _____.

The process of drawing a group of participants from a population:

Although it would be good to have everyone she asked participate in the study, Dr. Smith knows that some people will refuse to participate. The percentage of sampled members who actually participate in the study known as the _______________________.

In what type of sampling does the researcher divide the population into mutually exclusive groups and then select a random sample of individuals from each group?

A sampling frame is:

Which of the following is a type of mixed research sampling?

When people with specific characteristics are recruited into a sample so that particular groups can be studied, this is called:

The use of critical-case sampling and negative-case sampling would be an example of mixed purposeful sampling.

For her qualitative research study, Polly selected a small group of people who were very similar. This is called:

Nonrandom sampling techniques are used for quantitative and qualitative research studies.

If an experimental researcher wants to obtain a sample of students with a learning disability, he or she will probably use purposive sampling.

A researcher is interested in surveying physicians from a local medical society to examine their continuing education needs. He decides that she will draw a sample that contains physicians from a variety of different subspecialties. He divides the list of the population up by specialty, and then he randomly selects the number of physicians within each specialty in proportion to their percentage in the population. What is this type of sampling?

Which of the following is not true about stratified random sampling?

A study that examines the whole population is called: