Exam 11: Sampling

What is the main risk involved when using a convenience sample?

A disadvantage of a proportional stratified sampling strategy is that you need to have incomplete data on the variable used to stratify the sample on everyone in the population.

With ______ sampling, it is unknown what the chance was that an individual was selected.

When a researcher does not acknowledge other variables that can influence a relationship between two variables, what might result?

Tarek wants to better understand the reasons people voted for the winning candidate in the 2016 presidential election. If Tarek only wants to speak to Republicans, he would be engaging in what type of sampling?

Sampling ______ is produced by using sampling strategies that overrepresent a portion of the study population.

______ sampling involves the researcher selecting the first person to be in the sample based on a random starting point and then selecting the remainder of the sample based on a fixed sampling interval.

Selection ______ can reduce the validity of the inferences you want to draw from inferential statistical tests.

Which step is needed to create a random sample?

Which of the following sampling methods involves representing the major characteristics of a population by sampling an equal amount of each?

Which type of sampling is best used when there are few resources to conduct a study at an agency?

Michael found that ice cream sales and crime rates were highly correlated to each other. Michael concluded that ice cream sales caused high crime. What mistake is Michael making?

What kind of variable can have a hidden effect on your experiment's outcome causing you to incorrectly infer a spurious correlation?

How is a two-stage cluster different from a one-stage cluster?

If the researcher wants the sample size of each subgroup to be proportional in its representation to the population, which type of stratified sampling strategy should they use?

______ sampling allows the results of a researcher's study to be generalized to the population from which the sample was drawn.

A ______ sample is one that closely matches the population from which it was drawn.

Javier wants to learn about the most needed services his social work agency should offer to help those who are homeless. What type of sampling should he conduct to speak to as many people who are homeless as possible?

Which type of sampling is best to use when a sample is difficult to access?

What are at least three factors researchers should consider when choosing a sampling method?