WGU C985Actual Exam Preparation Questions with Distinction level Marking scheme 2024/2025
Interval data - correct answer Includes units of equal size, such as IQ results. There is no zero point. An example is time: Time is measured in 24 hours in each day; the time between each hour is the same...
WGU C985Actual Exam Preparation
Questions with Distinction level
Marking scheme 2024/2025
Interval data - correct answer Includes units of equal size,
such as IQ results. There is no zero point. An example is time:
Time is measured in 24 hours in each day; the time between each
hour is the same, 60 minutes.
methods section components - correct answer When analyzing
the quality of a study, a careful evaluation of the research
methods can reveal critical details about population and sample,
co-variables and hypothesis, data presentation, statistical
analysis, and study limitations.
Misleading Statistics - correct answer Interpreting and
presenting results of data analysis affords many opportunities for
accidental or deliberate misrepresentations of data. Common
examples include implying causation, extrapolating beyond the
reasonable, relying on a biased or incomplete sample, and using
inappropriate graphical representations.
Nominal Data - correct answer Can be measured as a
frequency or percentage, and the mean of these data cannot be
calculated. In healthcare might include demographic information
about patients. The word means "pertaining to a name."
Ordinal Data - correct answer The word means to "put in
order." It can be measured as a frequency, and the mean of
ordinal data is often calculated. In healthcare might include
patient satisfaction surveys using a Likert scale.
,Pearson's Correlation Test - correct answer Is used with
interval and ordinal scale data and determines the extent to
which a change in one variable tends to be associated with a
change in another.
Risk Adjustment - correct answer Essential for comparing
data across systems, especially among patients with varying co-
morbid diseases and complex treatment modalities. Multivariate
regression analyses can be used to analyze and ___________. This
analysis model looks at each measured factor to the patient's risk
of a particular outcome.
Standard Deviation (SD) - correct answer Determines the
amount of variance in a set of data and evaluates the degree to
which each case deviates from the average, or mean.
t-test - correct answer Helps the researcher to compare
whether two groups have different average values. A paired
____________ is used when each observation in one group is paired
with a related observation in another.
Variable - correct answer Is the factor that is directly
manipulated by the researchers. The dependent ________ is the
measurable ________ that depends on the independent
____________.
Risk of error or harm - correct answer Studies should include
an analysis of any sources of error as well as a thorough
explanation of the consequences associated with a particular
study treatment.
, Data warehouse - correct answer Used for advanced data
mining. Hold huge amounts of data, used when multiple
organizations join to share information, i.e., ACO or HIE.
Relational Database - correct answer Data stored in various
tables, each table has a key
field to connect it to other tables, making all tables related to
each other. Most common.
Object Oriented Database - correct answer In addition to text,
stores audio, video, images, other 'objects'.
Transactional Database - correct answer Used online for
actions such as lab sending information to clinical area. Has the
capacity to roll back to originally stored information if power
outage or hacking. Most relational databases today have this
capacity.
data warehouse - correct answer A business intelligence
analyst at a regional healthcare system is developing reports for
clinical quality improvement projects and best practice guideline
development. The best practice guidelines will be used across
the entire
regional system. Which type of database would be used to gather
and analyze data for the reports needed?
NPDB (National Practitioner Data Bank) - correct answer A
hospital is onboarding a new cardiothoracic surgeon who is
moving from a different state to join their physician team. Which
data source will be used to ensure the credentials and
background of this physician?
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