Exam 9: Sampling and Introduction to External Validity

Match the following examples with their appropriate concepts -Sylvester Stallone only received a 10% return rate on his survey of Rambo look-alikes.

A researcher is interested in the effects of miscarriage on women's self-esteem. She hand picks a group of women from a women's center in a large, urban area who are in a group support program post-miscarriage. This is an example of what type of sampling technique:

Large samples may detect relationships that have little practical importance.

Match the following examples with their appropriate concepts: -Larry wants to survey people who have seen a rare film, "The Yellow Wombat." He finds some people who have seen it and asks them if they know others he can survey.

A researcher is going door-to-door to locate elderly individuals to interview for a study on aging. She has been assigned to a specific grid of city blocks. This is an example of what type of sampling technique:

A researcher in Denver wants to study US HMO physicians' satisfaction with managed care. All HMO physicians are selected or sampled from 30 randomly selected cities and towns in the US. This is an example of what type of sampling technique:

A researcher wants to sample one-fourth of a population of geriatric patients for a study on anemia. Using a random number table, he selects the second person on the list as the first participant and samples the 2^nd, 6^th, 10^th, etc. people from his sample. This is an example of what type of sampling:

A researcher is interested in the number of college administrators in the United States who are Asian women. Match the following concepts with the examples provided: -A sample of 100 college administrators in all the universities of Boston, Miami, Denver, Seattle who are Asian women.

Match the following examples with their appropriate concepts: -Faye has a list of the county's foster care families caring for crack-addicted infants. The case manager helps her select a number of representative families to interview about their experiences with crack-addicted infants.

Match the following examples with their appropriate concepts -Sharon Stone used a simple random sampling technique for her study of muses.

Ecological validity can be affected by the timing and length of the treatment.

A researcher is interested in the number of college administrators in the United States who are Asian women. Match the following concepts with the examples provided: -College administrators in the United States who are Asian women.

A researcher is interested in studying dual-earner Hispanic couples. She receives names of other couples from some of her interviewees. This is an example of what type of sampling technique:

The assumptions of probability theory and sampling error can be applied to quota sampling.

Match the following examples with their appropriate concepts: -Carlos wants to recruit 60% females and 40% males from a population of 365 12^th grade students. He randomly selects 66 females and 44 males.

With simple and systematic random sampling, there has to be a finite list of persons in the population.

A large sample size will help detect the differences between a statistically significant finding and a meaningful finding.

What aspects can lead to an unrepresentative sample?

With a stratified random probability sample, the results need to be weighted to adequately describe the population.

A researcher is interested in the disappearance of spotted owls from Northwestern forests. She studies 10 breeding pairs of spotted owls in Cascade National Park for one year. The 10 breeding pairs are the: