WGU D514 ANALYTICAL METHODS OF
HEALTHCARE LEADERS UPDATED
ACTUAL Exam Questions and CORRECT
Answers
ANOVA - CORRECT ANSWER - Analysis of variance test. Used when there are two or
more groups to compare.
A group of psychiatric patients are trying three different therapies: counseling, medication, and
biofeedback. You want to see if one therapy is better than others.
Alternative Hypothesis - CORRECT ANSWER - States that the two groups we are
studying are different: this is the researcher's hypothesis, the alternative model that you want to
consider. The burden of proof lies with the researcher.
Analysis Plan - CORRECT ANSWER - A data analysis plan is a roadmap for how you're
going to organize and analyze your survey data -- and it should help you achieve three objectives
that relate to the goal you set before you started your survey.
Bayesian Approach - CORRECT ANSWER - an advanced mathematical procedure that
applies probabilities to statistical problems. It provides people the tools to update their beliefs in
the evidence of new data.
Categorical Variable - CORRECT ANSWER - Values that are names or labels. The color
of a ball or the breed of a dog would be examples of categorical variables.
Central Tendency - CORRECT ANSWER - Is the phenomenon of typical values often
occurring in the middle of a distribution. The greater the tendency toward the center, the more
likely a distribution is normal in shape.
, Chi-square Test - CORRECT ANSWER - Determine if an association exists between two
categorical variables. Compares values you observe to expected.
Do men or women call out sick to work more?
Confounding Variable - CORRECT ANSWER - A variable that obscures the effect of
another variable.
Continuous Variable - CORRECT ANSWER - It is also known as an interval variable.
There is a meaningful difference between variables. For example, a temperature difference
between 80* and 90* is the same difference as between 90* and 100*.
Congrol Group - CORRECT ANSWER - In a healthcare environment, this group of
patients do not receive the treatment that is being studied.
Correlation Coefficient - CORRECT ANSWER - Measures strength and direction of a
linear relationship between 2 variables on a scatter plot.
Looks for not only the relationship, but the magnitude of association. It is not cause and effect,
just relationship.
Cross-Sectional Research - CORRECT ANSWER - Also called a prevalence study, it
gathers and analyzes data from a population or subset of a population at a specific point in time
or place.
For example, a group of physicians may wish to do a cross-sectional study to see how many of
their patients ages 10-14 are on medication for ADHD.
Dependent Variable - CORRECT ANSWER - It is what is going to change, or not, as a
result of your research.
HEALTHCARE LEADERS UPDATED
ACTUAL Exam Questions and CORRECT
Answers
ANOVA - CORRECT ANSWER - Analysis of variance test. Used when there are two or
more groups to compare.
A group of psychiatric patients are trying three different therapies: counseling, medication, and
biofeedback. You want to see if one therapy is better than others.
Alternative Hypothesis - CORRECT ANSWER - States that the two groups we are
studying are different: this is the researcher's hypothesis, the alternative model that you want to
consider. The burden of proof lies with the researcher.
Analysis Plan - CORRECT ANSWER - A data analysis plan is a roadmap for how you're
going to organize and analyze your survey data -- and it should help you achieve three objectives
that relate to the goal you set before you started your survey.
Bayesian Approach - CORRECT ANSWER - an advanced mathematical procedure that
applies probabilities to statistical problems. It provides people the tools to update their beliefs in
the evidence of new data.
Categorical Variable - CORRECT ANSWER - Values that are names or labels. The color
of a ball or the breed of a dog would be examples of categorical variables.
Central Tendency - CORRECT ANSWER - Is the phenomenon of typical values often
occurring in the middle of a distribution. The greater the tendency toward the center, the more
likely a distribution is normal in shape.
, Chi-square Test - CORRECT ANSWER - Determine if an association exists between two
categorical variables. Compares values you observe to expected.
Do men or women call out sick to work more?
Confounding Variable - CORRECT ANSWER - A variable that obscures the effect of
another variable.
Continuous Variable - CORRECT ANSWER - It is also known as an interval variable.
There is a meaningful difference between variables. For example, a temperature difference
between 80* and 90* is the same difference as between 90* and 100*.
Congrol Group - CORRECT ANSWER - In a healthcare environment, this group of
patients do not receive the treatment that is being studied.
Correlation Coefficient - CORRECT ANSWER - Measures strength and direction of a
linear relationship between 2 variables on a scatter plot.
Looks for not only the relationship, but the magnitude of association. It is not cause and effect,
just relationship.
Cross-Sectional Research - CORRECT ANSWER - Also called a prevalence study, it
gathers and analyzes data from a population or subset of a population at a specific point in time
or place.
For example, a group of physicians may wish to do a cross-sectional study to see how many of
their patients ages 10-14 are on medication for ADHD.
Dependent Variable - CORRECT ANSWER - It is what is going to change, or not, as a
result of your research.
