PSYCH 201 CHAPTER 5 QUESTIONS WITH
COMPLETE SOLUTIONS
A priori Correct Answer Latin for 'from before.'
A Priori Power Analysis Correct Answer A power analysis
conducted before data collection to determine the necessary
sample size.
Accessible population Correct Answer The people that the
researcher can realistically involve in the study.
Accessible vs. Target Correct Answer The accessible
population may not accurately reflect the target population.
Advantages of online recruitment Correct Answer Facilitates
year-round data collection and access to large, diverse samples.
Alpha Level Correct Answer The threshold probability for
rejecting the null hypothesis, commonly set at α = .05.
Analysis of Sensitivity Correct Answer An analysis that
examines how the results of a study might change with different
sample sizes.
ANOVA or Regression Example Use Correct Answer
Cohen's f is used in these types of statistical analyses.
Appropriateness of sampling methods Correct Answer The
context in which a particular sampling method is suitable for
use.
,Attrition Correct Answer The loss of participants during a
study, which can affect the results.
Bias Correct Answer Bias is a major threat in sampling.
Bias in convenience sampling Correct Answer An easy
method for obtaining a sample, but the sample is probably
biased.
Bias in Sampling Correct Answer Convenience sampling is
likely to produce a biased sample.
Bias in systematic sampling Correct Answer The sample is
likely to be biased.
Biased Sample Correct Answer A sample that does not
accurately reflect the characteristics of the population, leading to
skewed results.
Caution in generalization Correct Answer Caution is
warranted about generalizing the results of an accessible
population to the target population.
Cengage Learning Correct Answer The publisher of the
textbook 'Research Methods for the Behavioral Sciences'.
Characteristics Affecting Statistical Power Correct Answer
Factors such as sample size, effect size, and significance level
that influence the power of a statistical test.
, Characteristics of individuals Correct Answer Some
individuals in the sample may be older, faster, smarter, etc.
Cluster Sampling Correct Answer A probability sampling
method where the population is divided into clusters, and entire
clusters are randomly selected.
Cohen's d Correct Answer A statistic used to measure effect
size, indicating the standardized difference between two means.
Cohen's d = 0.10 Correct Answer Effect size corresponding to
sample sizes for different desired power.
Cohen's d = 0.20 Correct Answer Effect size corresponding to
sample sizes for different desired power.
Cohen's d = 0.30 Correct Answer Effect size corresponding to
sample sizes for different desired power.
Cohen's d = 0.40 Correct Answer Effect size corresponding to
sample sizes for different desired power.
Cohen's d = 0.50 Correct Answer Effect size corresponding to
sample sizes for different desired power.
Cohen's d = 0.60 Correct Answer Effect size corresponding to
sample sizes for different desired power.
Cohen's d = 0.70 Correct Answer Effect size corresponding to
sample sizes for different desired power.
COMPLETE SOLUTIONS
A priori Correct Answer Latin for 'from before.'
A Priori Power Analysis Correct Answer A power analysis
conducted before data collection to determine the necessary
sample size.
Accessible population Correct Answer The people that the
researcher can realistically involve in the study.
Accessible vs. Target Correct Answer The accessible
population may not accurately reflect the target population.
Advantages of online recruitment Correct Answer Facilitates
year-round data collection and access to large, diverse samples.
Alpha Level Correct Answer The threshold probability for
rejecting the null hypothesis, commonly set at α = .05.
Analysis of Sensitivity Correct Answer An analysis that
examines how the results of a study might change with different
sample sizes.
ANOVA or Regression Example Use Correct Answer
Cohen's f is used in these types of statistical analyses.
Appropriateness of sampling methods Correct Answer The
context in which a particular sampling method is suitable for
use.
,Attrition Correct Answer The loss of participants during a
study, which can affect the results.
Bias Correct Answer Bias is a major threat in sampling.
Bias in convenience sampling Correct Answer An easy
method for obtaining a sample, but the sample is probably
biased.
Bias in Sampling Correct Answer Convenience sampling is
likely to produce a biased sample.
Bias in systematic sampling Correct Answer The sample is
likely to be biased.
Biased Sample Correct Answer A sample that does not
accurately reflect the characteristics of the population, leading to
skewed results.
Caution in generalization Correct Answer Caution is
warranted about generalizing the results of an accessible
population to the target population.
Cengage Learning Correct Answer The publisher of the
textbook 'Research Methods for the Behavioral Sciences'.
Characteristics Affecting Statistical Power Correct Answer
Factors such as sample size, effect size, and significance level
that influence the power of a statistical test.
, Characteristics of individuals Correct Answer Some
individuals in the sample may be older, faster, smarter, etc.
Cluster Sampling Correct Answer A probability sampling
method where the population is divided into clusters, and entire
clusters are randomly selected.
Cohen's d Correct Answer A statistic used to measure effect
size, indicating the standardized difference between two means.
Cohen's d = 0.10 Correct Answer Effect size corresponding to
sample sizes for different desired power.
Cohen's d = 0.20 Correct Answer Effect size corresponding to
sample sizes for different desired power.
Cohen's d = 0.30 Correct Answer Effect size corresponding to
sample sizes for different desired power.
Cohen's d = 0.40 Correct Answer Effect size corresponding to
sample sizes for different desired power.
Cohen's d = 0.50 Correct Answer Effect size corresponding to
sample sizes for different desired power.
Cohen's d = 0.60 Correct Answer Effect size corresponding to
sample sizes for different desired power.
Cohen's d = 0.70 Correct Answer Effect size corresponding to
sample sizes for different desired power.
