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Exam 8: Sampling

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Question 1

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Explain why random selection of a sample is supposed to be a good tool for selecting a representative sample.

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Random selection of a sample is supposed...

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Question 2

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A ___________ is a comprehensive list of everyone or everything in the population of interest.

A) Sample
B) Sample element
C) Population parameter
D) Sampling frame

E) B) and D)
F) B) and C)

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Question 3

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Multistage cluster sampling involves taking every nth (5^th, 10^th, etc) case in the population.

How does a unit of observation differ from a unit of analysis?

Incorrectly making assumptions about individuals based on the research results of groups is known as _________.

A _________ is a subset of a population.

Specifically selecting people who are high-achievers or low-risk for programs with the assumption that they are most likely to succeed is known as ________________

If I interview someone and then ask that person to introduce me to some associates so I could interview them, what type of sampling technique is this?

Why is random sampling believed to be the best way to select participants?

Give an example of why a researcher would want to use nonprobablility sampling.

Quota sampling is a type of probability sampling.

We can determine the proper sample size that we need to avoid statistical conclusion validity problems by conducting a ____________

Incorrectly making assumptions about large groups based on the circumstances of one very unique case is known as _________.

Systematic random sampling is a type of probability sampling.

A comprehensive list of everyone or everything in the population of interest is called a population parameter.

How does quota sampling differ from stratified random?

When we want to check to see how similar our sample is to the population, we compare a sample statistic to a population __________.

How can researchers try to make snowball samples a bit less biased?

Simple random sampling is conducted by taking names out of a hat or using a random number generator.

When we are trying to calculate confidence intervals to see where the true population mean probably is, as the interval itself gets smaller, our confidence _________.