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C207 WGU OA EXAM LATEST UPDATE THIS YEAR
WITH ALL COMPLETE QUESTIONS AND CORRECT
VERIFIED SOLUTIONS JUST RELEASED
Question: Question - If you came in first, second, or third in a race, this would be an example of
a type of data. Rankings are an example of which kind of data?
A - Nominal
B - Continuous
C - Discrete
D - Ordinal - CORRECT ANSWER✔✔D - Ordinal
• Nominal - names
• Ordinal - order
• Interval - equal distance
• Ratio - Unique zero point
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Question: Question - Is there a trend in the incidence of child abuse in a particular State? 2
years of monthly incidence rates of child abuse
A - Paired sample t-test
B - Time series trend analysis
C - Chi-square
D - Logistic regression - CORRECT ANSWER✔✔B - Time series trend analysis
Key wards: trend, monthly, rates
• Time Series is an approach that usually requires regression to see the relationship over time as
a trend
Question - You had headcounts on Monday of 20 and Tuesday of 7 for a study of differences
in average police staffing across 3 adjoining precincts. You ran a chi-square study. You obtain a p-
value of less than :045. The Chi-Square test statistic has a value of 78.0 (greater than the table
value of critical chi-square for the F). What does your analysis show?
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A - Not enough data was used
B - p is significant
C - p is NOT significant
D - p is borderline - CORRECT ANSWER✔✔B - p is significant
• P-value less than 0.05 and high Chi-square stat
• Over 5 data points counted each day
Question: Question - You conduct a trend analysis. You find that R-square is over 0.8 and p-
value is 0.023. What does your analysis show? You had 3 years of monthly incidence rates.
A - High R-square is good fit and low p is significant
B - Not enough data was used
C - High R-square is good fit but p is NOT significant
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D - R-square is Not a good fit but low p is significant - CORRECT ANSWER✔✔A - High R-square is
good fit and low p is significant
•P-value less than 0.05
• R-square greater than 0.5
• Over 30+ data points
Question: Question - There is an 70 percent chance of rain.
When it rains, there is a 10 percent chance of Todd walking to the store. On days that it doesn't
rain, there is a 60 percent chance of Todd walking to the store. What is the ilkelihood that it will
not rain today and Todd will walk to the store?
A - 18%
B - 12%
C - 42%
D-7% - CORRECT ANSWER✔✔A - 18%
% always = 100
4
SUCCESS!
C207 WGU OA EXAM LATEST UPDATE THIS YEAR
WITH ALL COMPLETE QUESTIONS AND CORRECT
VERIFIED SOLUTIONS JUST RELEASED
Question: Question - If you came in first, second, or third in a race, this would be an example of
a type of data. Rankings are an example of which kind of data?
A - Nominal
B - Continuous
C - Discrete
D - Ordinal - CORRECT ANSWER✔✔D - Ordinal
• Nominal - names
• Ordinal - order
• Interval - equal distance
• Ratio - Unique zero point
1
SUCCESS!
,Page 2 of 37
Question: Question - Is there a trend in the incidence of child abuse in a particular State? 2
years of monthly incidence rates of child abuse
A - Paired sample t-test
B - Time series trend analysis
C - Chi-square
D - Logistic regression - CORRECT ANSWER✔✔B - Time series trend analysis
Key wards: trend, monthly, rates
• Time Series is an approach that usually requires regression to see the relationship over time as
a trend
Question - You had headcounts on Monday of 20 and Tuesday of 7 for a study of differences
in average police staffing across 3 adjoining precincts. You ran a chi-square study. You obtain a p-
value of less than :045. The Chi-Square test statistic has a value of 78.0 (greater than the table
value of critical chi-square for the F). What does your analysis show?
2
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,Page 3 of 37
A - Not enough data was used
B - p is significant
C - p is NOT significant
D - p is borderline - CORRECT ANSWER✔✔B - p is significant
• P-value less than 0.05 and high Chi-square stat
• Over 5 data points counted each day
Question: Question - You conduct a trend analysis. You find that R-square is over 0.8 and p-
value is 0.023. What does your analysis show? You had 3 years of monthly incidence rates.
A - High R-square is good fit and low p is significant
B - Not enough data was used
C - High R-square is good fit but p is NOT significant
3
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, Page 4 of 37
D - R-square is Not a good fit but low p is significant - CORRECT ANSWER✔✔A - High R-square is
good fit and low p is significant
•P-value less than 0.05
• R-square greater than 0.5
• Over 30+ data points
Question: Question - There is an 70 percent chance of rain.
When it rains, there is a 10 percent chance of Todd walking to the store. On days that it doesn't
rain, there is a 60 percent chance of Todd walking to the store. What is the ilkelihood that it will
not rain today and Todd will walk to the store?
A - 18%
B - 12%
C - 42%
D-7% - CORRECT ANSWER✔✔A - 18%
% always = 100
4
SUCCESS!
