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WGU C955 APPLIED PROBABILITY AND STATISTICS PRACTICE GUIDE 2026 REGRESSION ANALYSIS AND CORRELATION PRINCIPLES

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WGU C955 APPLIED PROBABILITY AND STATISTICS PRACTICE GUIDE 2026 REGRESSION ANALYSIS AND CORRELATION PRINCIPLES

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WGU C955 APPLIED PROBABILITY AND
STATISTICS PRACTICE GUIDE 2026
REGRESSION ANALYSIS AND
CORRELATION PRINCIPLES


◉ Scatter plot
Answer: A graphical representation of Q -> Q


◉ Two way table
Answer: A graphical representation of C -> C


◉ Side-by side box
Answer: A graphical representation of C -> Q


◉ Interpolation
Answer: Making predictions *within* the range of your data. This is
usually accurate.


◉ Extrapolation

, Answer: Making predictions *outside* of the range of your data. This
is generally a bad idea.


◉ Simpson's Paradox
Answer: When split up, each data set can have a pattern which goes
away when all the data is combined.


◉ Prospective study
Answer: Is a study that's done over time to find results / A study
watching for outcomes during the study period


◉ Unbalanced response
Answer: Giving more options that are negative than positive options
(or vice versa) which biases the responses towards the more
common option


◉ Matched pairs
Answer: Grouping two similar subjects and giving different
treatments/procedures to each in order to compare the differences.
For example, having one twin take a medication while the other twin
does not.


◉ Population
Answer: The entire group you are trying to describe or understand.

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