WGU C985 Rehearsal Exam Toolkit Questions with all Answers provided Accurately 2024/2025
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Course
WGU C985
Institution
WGU C985
WGU C985 Rehearsal Exam Toolkit Questions with all Answers provided Accurately 2024/2025
Confounding variable - correct answer a variable that obscures the effect of another variable
Ordinal variable - correct answer order of variable matters but difference between values does not. Example:...
WGU C985 Rehearsal Exam Toolkit
Questions with all Answers provided
Accurately 2024/2025
Confounding variable - correct answer a variable that
obscures the effect of another variable
Ordinal variable - correct answer order of variable matters but
difference between values does not. Example: 1st born child is 4
years older than the 2nd born child. The 2nd born child is 5 years
older than the 3rd born child. The order matters but value
between does not.
Continuous variable - correct answer it is also known as an
interval variable. There is a meaningful difference between
values. For example, a temperature difference between 80* and
90* is the same difference as between 90* and 100* (10 degrees).
Categorical variable - correct answer values that are names or
labels. The color of a ball (e.g., red, green, blue) or the breed of a
dog (e.g., collie, shepherd, and terrier) would be examples of
categorical variables. Gender - male or female.
Range - correct answer measure of spread- the difference
between the largest and smallest values in a frequency
distribution.
Quantitative research - correct answer used to quantify the
problem by way of generating numerical data or data that can be
transformed into usable statistics.
, Population of study - correct answer a group of individuals
taken from the general population who share a common
characteristic. (such as age, gender, health condition)
Descriptive statistics - correct answer describe what the data
show about the characteristics of a sample- they tell us
information about a particular population. They are considered
accurate and can be verified.
Inferential statistics - correct answer help us make inferences
or guess about a larger group of data by drawing conclusions
from a small group of data. Inferential statistics tell us if the
difference in outcome between the treatment group and the
control group was significant.
Mann-whitney u test - correct answer is the non-parametric
alternative test to the independent sample t-test. It is used to
compare two sample means that come from the same population,
and used to test whether two sample means are equal or not.
Normally used when the data is ordinal or when assumptions
from t-test are not met.
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.
Regression analysis - correct answer estimates relationships
among variables. Used to analyze and adjust risk (risk
adjustment). Looks at each measured factor to predict the risk of
a particular outcome. Can include multiple variables at one time.
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