WGU D513 POPULATION RISK
COMPREHENSIVE STUDY GUIDE 2026 FULL
QUESTIONS AND SOLUTIONS GRADED A+
◍ Independent Variable.
Answer: Variable manipulated to observe effects on dependent variable.
◍ Mean.
Answer: Average value of a data set.
◍ Factor Analysis.
Answer: Statistical method identifying underlying relationships among
variables.
◍ reliability.
Answer: The instruments used in research must be consistent (reliable) and
accurate (valid). The greater the degree of consistency, the more reliable the
scale.
◍ evidence-based practice.
Answer: clinical decision making that integrates the best available research
with clinical expertise and patient characteristics and preferences
◍ Quantitative Research.
Answer: Gathers data in a numerical form which can be put into categories,
or in rank order, or measured in units of measurement. This type of data can
be used to construct graphs and tables of raw data. Researchers aim to
establish general laws of behavior/phenomenon across different
settings/contexts. Research is used to test theories and ultimately support or
reject it.
◍ disease surveillance.
, Answer: Ongoing systematic collection, analysis, interpretation, and
dissemination of specific health data for use in public health.
◍ Prevention.
Answer: Actions aimed at eradicating, eliminating, or minimizing the impact
of disease and disability, or if none of these is feasible, retarding the
progress of disease and disability. Generally, focuses on illnesses that can be
acquired, as opposed to illnesses that are inherited.
◍ How do professionals locate and organize relevant evidence?.
Answer: PPAAREP: ProblemP: Patient or populationA: ActionA:
AlternativeR: ResultE: Evidence
◍ descriptive statistics.
Answer: used to describe the basic features of the data in a study. Provides
simple summaries about the sample and the measures.
◍ Analysis Plan.
Answer: Statistical methods applied post-data collection.
◍ De-identified Database.
Answer: Database with removed personal identifiers for privacy.
◍ Significant Factors.
Answer: Key variables impacting research outcomes.
◍ Nominal variables.
Answer: Categories without a specific order.
◍ OR<1.0.
Answer: The odds are decreased.
◍ meta-analysis.
Answer: An added step to a systematic review, where a statistical analysis is
performed to quantify the findings.Quantitative research style
◍ Cross-sectional research.
Answer: Analyzes data at a specific time point.
, ◍ measures of position.
Answer: Type of descriptive statistics:-Percentile ranks, Quartile
ranks-Describes how scores fall in relation to one another. Relies on
standardized scores.-Use when comparing scores to a normalized score.
◍ primary prevention.
Answer: Aims to reduce incidence of disease by personal & communal
efforts. A core task of public health.AKA-Decreasing environmental
risks-Enhancing nutritional status-Immunizing against communicable
diseases-Improving water supply
◍ t-test.
Answer: Statistical test for small sample size comparisons.
◍ bar chart.
Answer: -Categorical data-Compares categories of data-Each rectangular bar
has height & length proportional to the values they represent.-X-axis
represents the categories.-Y-axis represents the counts/frequencies
◍ Data Collection.
Answer: Method of gathering information for analysis.
◍ Random assignment.
Answer: Participants assigned randomly to groups.
◍ Fidelity.
Answer: Commitment to maintaining accuracy and reliability.
◍ external validity.
Answer: extent to which we can generalize findings to real-world settings
◍ Null Hypothesis.
Answer: Assumption tested in statistical analysis.
◍ cohort study.
Answer: An observational study design in which a specific group is
followed over time.Quantitative research style
◍ Why practice evidence-based healthcare?.
COMPREHENSIVE STUDY GUIDE 2026 FULL
QUESTIONS AND SOLUTIONS GRADED A+
◍ Independent Variable.
Answer: Variable manipulated to observe effects on dependent variable.
◍ Mean.
Answer: Average value of a data set.
◍ Factor Analysis.
Answer: Statistical method identifying underlying relationships among
variables.
◍ reliability.
Answer: The instruments used in research must be consistent (reliable) and
accurate (valid). The greater the degree of consistency, the more reliable the
scale.
◍ evidence-based practice.
Answer: clinical decision making that integrates the best available research
with clinical expertise and patient characteristics and preferences
◍ Quantitative Research.
Answer: Gathers data in a numerical form which can be put into categories,
or in rank order, or measured in units of measurement. This type of data can
be used to construct graphs and tables of raw data. Researchers aim to
establish general laws of behavior/phenomenon across different
settings/contexts. Research is used to test theories and ultimately support or
reject it.
◍ disease surveillance.
, Answer: Ongoing systematic collection, analysis, interpretation, and
dissemination of specific health data for use in public health.
◍ Prevention.
Answer: Actions aimed at eradicating, eliminating, or minimizing the impact
of disease and disability, or if none of these is feasible, retarding the
progress of disease and disability. Generally, focuses on illnesses that can be
acquired, as opposed to illnesses that are inherited.
◍ How do professionals locate and organize relevant evidence?.
Answer: PPAAREP: ProblemP: Patient or populationA: ActionA:
AlternativeR: ResultE: Evidence
◍ descriptive statistics.
Answer: used to describe the basic features of the data in a study. Provides
simple summaries about the sample and the measures.
◍ Analysis Plan.
Answer: Statistical methods applied post-data collection.
◍ De-identified Database.
Answer: Database with removed personal identifiers for privacy.
◍ Significant Factors.
Answer: Key variables impacting research outcomes.
◍ Nominal variables.
Answer: Categories without a specific order.
◍ OR<1.0.
Answer: The odds are decreased.
◍ meta-analysis.
Answer: An added step to a systematic review, where a statistical analysis is
performed to quantify the findings.Quantitative research style
◍ Cross-sectional research.
Answer: Analyzes data at a specific time point.
, ◍ measures of position.
Answer: Type of descriptive statistics:-Percentile ranks, Quartile
ranks-Describes how scores fall in relation to one another. Relies on
standardized scores.-Use when comparing scores to a normalized score.
◍ primary prevention.
Answer: Aims to reduce incidence of disease by personal & communal
efforts. A core task of public health.AKA-Decreasing environmental
risks-Enhancing nutritional status-Immunizing against communicable
diseases-Improving water supply
◍ t-test.
Answer: Statistical test for small sample size comparisons.
◍ bar chart.
Answer: -Categorical data-Compares categories of data-Each rectangular bar
has height & length proportional to the values they represent.-X-axis
represents the categories.-Y-axis represents the counts/frequencies
◍ Data Collection.
Answer: Method of gathering information for analysis.
◍ Random assignment.
Answer: Participants assigned randomly to groups.
◍ Fidelity.
Answer: Commitment to maintaining accuracy and reliability.
◍ external validity.
Answer: extent to which we can generalize findings to real-world settings
◍ Null Hypothesis.
Answer: Assumption tested in statistical analysis.
◍ cohort study.
Answer: An observational study design in which a specific group is
followed over time.Quantitative research style
◍ Why practice evidence-based healthcare?.
