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Exam 6: Sampling

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Question 1

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The sampling technique that involves choosing individuals from the population such that individuals are chosen from a pre-existing group ______.

A) simple random sample
B) cluster sample
C) haphazard sample
D) stratified random sample

E) A) and D)
F) A) and C)

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Question 2

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Explain why probability samples are likely to have less sampling error than convenience samples.

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Probability samples are cho...

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Question 3

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Discuss the recruiting of study participants and what researchers need to consider.

Individuals are selected at random from a list of phone numbers to be called for a survey making the sampling used a ______.

External validity of a study should be considered when conclusions are drawn from results collected with a convenience sample.

A quota sample example might be described as ______.

In a simple random sample, if a population has 100 individuals, the chance of any one individual being selected for the sample is ______.

It is usually possible to test the entire population in a research study.

It is important to use a ______ sample when sampling error is likely to be large.

Probability samples can ______ the amount of sampling error that exists in a study.

Discuss how a research study's response rate affects the overall study.

Individuals are selected from a participant pool made up of students at a university who volunteer for the study. This type of sampling is ______.

The sampling technique that involves choosing individuals from the population at random where each individual has an equal chance of being selected is ______.

The cable sports channel ESPN often presents results of surveys they conduct by posting questions on their website and asking viewers to respond. Describe two sources of bias that can increase sampling error for these surveys, assuming the population of interest is all individuals who watch ESPN.

Describe the difference between a sample and a population and how sampling error occurs.

In convenience samples the probability of an individual being chosen from the population cannot be determined, because individuals are not chosen randomly.

Students are selected at random from lists of students at a university organized by class level such that the proportion of individuals at each class level in the population of students matches the proportion selected for the sample. This type of sampling is ______.

The ______ is the group of individuals a researcher wants to learn about in a study, whereas the ______ is the group of individuals tested in a study.

Cluster sampling makes it easier to choose members randomly from smaller clusters to better represent the population.

The most common type of convenience sample used by psychologists is the ______ sample.