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WGU C955 Applied Probability and Statistics Problem-Solving Exam Questions and With Distinction level Marking scheme updated 2024/2025$11.99
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WGU C955 Applied Probability and Statistics Problem-Solving Exam Questions and With Distinction level Marking scheme updated 2024/2025
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Course
WGU C955
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WGU C955
WGU C955 Applied Probability and Statistics Problem-Solving Exam Questions and With Distinction level Marking scheme updated 2024/2025
Correlation coefficient - correct answer a measure of the linear relationship between two attributes. The numerical value demonstrates how closely the attributes...
WGU C955 Applied Probability and Statistics
Problem-Solving Exam Questions and With
Distinction level Marking scheme updated
2024/2025
Correlation coefficient - correct answer a measure of the
linear relationship between two attributes. The numerical value
demonstrates how closely the attributes vary together.
Correlation coefficients near -1 and +1 have strong linear
correlation, while a correlation coefficient near 0 has weak (or
no) linear correlation.
Correlation - correct answer an observed relationship
between two quantitative variables. While this is most commonly
a linear relationship, it does not need to be. Note that observing
a relationship does not imply that there is a meaningful causal
link between the variables.
Degree - correct answer the largest exponent in a
mathematical expression or equation.
Experimental study - correct answer the researcher applies a
treatment to one group and no treatment (or placebo) to a
control group, to determine if there is causation between
variables.
Extrapolate - correct answer using information from a data
set to make predictions about data outside of the original set.
, Hypothesis test - correct answer a statistical test that tells us
whether a result is significant.
Least squares - correct answer a technique for finding the
regression line.
Least squares is the criteria by which the best-fit line is selected
for paired data. It is a method that minimizes the squared
distances of data points from a line that captures the trend in
paired data.
Linear extrapolation - correct answer estimation using the
linear regression equation is made outside known data points.
Linear interpolation - correct answer estimation using the
linear regression equation in between known data points.
Lurking variable - correct answer a variable that is not
included in an analysis but that is related to two (or more) other
associated variables which were analyzed.
Negative correlation - correct answer a linear relationship
between two quantitative variables in which the dependent
variable increases as the independent variable decreases.
Observational study - correct answer the researcher observes
if there is an association between variables. There is no
treatment or control group.
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