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PSY 203 Intro to Research Methods Final Exam || with Complete Solutions. £9.56
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PSY 203 Intro to Research Methods Final Exam || with Complete Solutions.
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We must use a ____ in our study to then use this evidence to make inferences about the ____ correct answers Sample Population The larger the sample... correct answers the more closely it resembles the population it represents The sample size will impact our ability to ___ to our intended pop...

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  • October 16, 2024
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  • 2024/2025
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PSY 203 Intro to Research Methods Final Exam || with
Complete Solutions.
We must use a ____ in our study to then use this evidence to make inferences about the ____
correct answers Sample
Population

The larger the sample... correct answers the more closely it resembles the population it represents

The sample size will impact our ability to ___ to our intended population correct answers
Generalize

It is overall better to have a diverse sample? correct answers Yes

WEIRD samples correct answers Western
Educated
Industrialized
Rich
Demographic

Compared to American adult non-students, American college students... correct answers
Respond more favorably toward other groups in society

are more supportive of racial diversity

are more motivated to mask or explain away negative intergroup attitudes

Having a sample that is representative of the population helps to increase ____ validity correct
answers external

What are the categories of sampling? correct answers Probability Sampling
-Simple Random Sampling

Nonprobability Sampling

Probability Sampling correct answers Every element in the population has a known chance of
being included.

Random selection is involved at some point.

Higher external validity

Allows one to generate probability of sample estimates deviating from population values
(STANDARD ERROR or MARGIN OF ERROR

, Simple Random Sampling correct answers All elements have an equal probability of being
selected

Problems:
1. Might want specific features sampled
2. can you know the entire population?

Nonprobability Sampling correct answers no way to know likelihood of element being included
in sample

no random selection

typically cheaper and more convenient

Standard error ____ as sample size _____ correct answers Decreases

Increases

What affects margin of error? correct answers Sample Size: As sample size goes up, standard
error goes down

Population Size: as population size goes up, standard error goes up

Variance of Data: as variability goes up, standard error goes up

Types of Nonprobability Sampling correct answers Convenience: use whatever participants are
readily available

Quota: Specify X number of people in sample to contain a particular characteristic. not always
concerned with having numbers that match the proportions in the population

Purposive: 1+ specific predefined groups being sought. Researcher may try to choose those who
are typical of population. Very common in districts shown to predict outcomes of election in
previous voting

Snowball: Identify someone who meets criteria and then ask them to recommend other potential
participants who meet criteria. Useful when you're trying to reach inaccessible or hard to find
populations (ex. homeless)

What type of sampling is the use of Purdue students for honors research projects? correct
answers Convenience

The 1992 standardization of an intelligence test was conducted in Dunfries, Scotland,
specifically because it: correct answers Has been used in previous standardization, had
demographic structure similar to UK as a whole, was small geographic area to help with testing
Purposive

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