©FYNDLAY 2024/2025 ALL RIGHTS RESERVED 12:05PM.
C207 -WGU Exam Questions And Answers
2025 Update.
Descriptive and Inferential Statistics - Answer✔There are two types of statistics (Analytics)
Inform / Explanatory - Answer✔Descriptive statistics are used to
Predict / Trend - Answer✔Inferential statistics are used to
(NOIR) Nominal, Ordinal, Interval, Ratio - Answer✔Name the 4 levels of measurement
ratio - Answer✔Continuous data with unique zero point
Interval - Answer✔Orders data at equal distance apart
Ordinal - Answer✔Place qualitative objects in some kind of order
Nominal - Answer✔Identify, Group, or Categorize
Out-of Range - Answer✔Outliers create this type of error
Random Error - No correlation - Answer✔Unpredictable error
Omission Error - Distorted results - Answer✔Error may occur from missing data.
(Example: Space not filled in)
Systematic Error - Skewed results - Answer✔This error repeats itself
Reduce/ minimize errors - Answer✔What is the process of quality control?
Experimental study - Answer✔All variable measurements and manipulations are under the
researcher's control
Observational study - Answer✔Used when impractical or impossible to control the conditions
of the study
Blind Study - Answer✔Participants are not told if they are in the treatment group or control
group
Treatments - Answer✔The procedure the researcher applies to each subject
1
, ©FYNDLAY 2024/2025 ALL RIGHTS RESERVED 12:05PM.
Double blind study - Answer✔Neither the treatment allocator nor the participants know who is
in the treatment group or control group
Information Bias - Answer✔Questions favor an outcome or the interviewer ask questions that
favor an outcome.
Expected Monetary Value (EMV)
Analysis - Answer✔The average outcome (payoff) when the future includes scenarios that may
or may not happen
Outliers
Note: Can be included or excluded in analysis (causes skewness) - Answer✔Observation points
that are distant from other observations.
Measurement bias - Answer✔Bias that occurs from not selecting a random sample
Conscious bias - Answer✔Bias introduced because respondents believe it will be beneficial if
selected.
Quartiles - Answer✔Each of the four quartile groups a population can be divided
IQR: Inter-quartile range
Note: Must be ordered in lowest to highest value - Answer✔Measures the difference between
the third and first quartile
Box Plot - Answer✔Used to study the composition of a data set and examine the distribution
1 customer and 6 booths = 1/6 or 16.7% - Answer✔There are six toll booths to enter the
highway. What probability does each toll booth worker have of getting the next customer?
Combination
Picking employees for a shift. Order doesn't matter. - Answer✔The order you pick you sample
in does not matter
Bayes Theorem
You must know P(A), P(B), P(A) given B - Answer✔When given P(A) given P(B), you can use this
to find the P(B) given P(A)
Multiplication - Answer✔Apply this rule when looking for two events occurring (AND)
Addition - Answer✔Use this rule when looking for one or the other event happening (OR)
Linear programming - Answer✔A technique for minimize total cost or maximize profit based on
constraints
2
C207 -WGU Exam Questions And Answers
2025 Update.
Descriptive and Inferential Statistics - Answer✔There are two types of statistics (Analytics)
Inform / Explanatory - Answer✔Descriptive statistics are used to
Predict / Trend - Answer✔Inferential statistics are used to
(NOIR) Nominal, Ordinal, Interval, Ratio - Answer✔Name the 4 levels of measurement
ratio - Answer✔Continuous data with unique zero point
Interval - Answer✔Orders data at equal distance apart
Ordinal - Answer✔Place qualitative objects in some kind of order
Nominal - Answer✔Identify, Group, or Categorize
Out-of Range - Answer✔Outliers create this type of error
Random Error - No correlation - Answer✔Unpredictable error
Omission Error - Distorted results - Answer✔Error may occur from missing data.
(Example: Space not filled in)
Systematic Error - Skewed results - Answer✔This error repeats itself
Reduce/ minimize errors - Answer✔What is the process of quality control?
Experimental study - Answer✔All variable measurements and manipulations are under the
researcher's control
Observational study - Answer✔Used when impractical or impossible to control the conditions
of the study
Blind Study - Answer✔Participants are not told if they are in the treatment group or control
group
Treatments - Answer✔The procedure the researcher applies to each subject
1
, ©FYNDLAY 2024/2025 ALL RIGHTS RESERVED 12:05PM.
Double blind study - Answer✔Neither the treatment allocator nor the participants know who is
in the treatment group or control group
Information Bias - Answer✔Questions favor an outcome or the interviewer ask questions that
favor an outcome.
Expected Monetary Value (EMV)
Analysis - Answer✔The average outcome (payoff) when the future includes scenarios that may
or may not happen
Outliers
Note: Can be included or excluded in analysis (causes skewness) - Answer✔Observation points
that are distant from other observations.
Measurement bias - Answer✔Bias that occurs from not selecting a random sample
Conscious bias - Answer✔Bias introduced because respondents believe it will be beneficial if
selected.
Quartiles - Answer✔Each of the four quartile groups a population can be divided
IQR: Inter-quartile range
Note: Must be ordered in lowest to highest value - Answer✔Measures the difference between
the third and first quartile
Box Plot - Answer✔Used to study the composition of a data set and examine the distribution
1 customer and 6 booths = 1/6 or 16.7% - Answer✔There are six toll booths to enter the
highway. What probability does each toll booth worker have of getting the next customer?
Combination
Picking employees for a shift. Order doesn't matter. - Answer✔The order you pick you sample
in does not matter
Bayes Theorem
You must know P(A), P(B), P(A) given B - Answer✔When given P(A) given P(B), you can use this
to find the P(B) given P(A)
Multiplication - Answer✔Apply this rule when looking for two events occurring (AND)
Addition - Answer✔Use this rule when looking for one or the other event happening (OR)
Linear programming - Answer✔A technique for minimize total cost or maximize profit based on
constraints
2
