C207 WGU OA MULTI CHOICE
QUESTIONS & ANSWERS(RATED A+)
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?
A - Not enough data was used
B - p is significant
C - p is NOT significant
D - p is borderline - ANSWERB - p is significant
• P-value less than 0.05 and high Chi-square stat
• Over 5 data points counted each day
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
D - R-square is Not a good fit but low p is significant - ANSWERA - 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 - Part of our success was the new point of sale system. Our customer sales
representatives were trained in utilizing the system to data mine and apply new
marketing techniques. They had to pass their final exam with a 90% or higher. What
type of test is this?
A - Criterion referenced
B - Six Sigma
C - Test-Retest
D - Norm referenced - ANSWERA - Criterion referenced
Key words: pass, 90% or higher
, Question - An Organization seeks to shift its business strategy to development of new
products for the future while still growing sales of its current products. Which tool could
help the company focus on both its financial objective and growth of new products?
A - Net Promoter Score
B - Six Sigma
C - Results Based Management
D - Balanced Scorecard - ANSWERD - Balanced Scorecard
Key words: strategy, focus on both, financial, growth
Question - There is an 70 percent chance of rain.
When it rains, there is a 10 percent chance of Todd walking to the store and there is
also a 15 percent chance of Todd having an umbrella. It is raining today. What
probability principle will determine if Todd will at least have his umbrella today?
A - Multiplication
B - Addition
C - Bayes
D - Combination - ANSWERB - Addition
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 - ANSWERB - 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 - Is there a relationship between number of training hours for counselors and
number of patient incidents requiring physical restraint? Staff training hours and 3 years
of monthly incidence data.
A - Regression
B - ANOVA
C - Multiple Regression
D - Chi-square - ANSWERA - Regression
Key words: relationship, hours, indicates
• If you see a 3, do not just assume that it is about ANOVA
QUESTIONS & ANSWERS(RATED A+)
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?
A - Not enough data was used
B - p is significant
C - p is NOT significant
D - p is borderline - ANSWERB - p is significant
• P-value less than 0.05 and high Chi-square stat
• Over 5 data points counted each day
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
D - R-square is Not a good fit but low p is significant - ANSWERA - 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 - Part of our success was the new point of sale system. Our customer sales
representatives were trained in utilizing the system to data mine and apply new
marketing techniques. They had to pass their final exam with a 90% or higher. What
type of test is this?
A - Criterion referenced
B - Six Sigma
C - Test-Retest
D - Norm referenced - ANSWERA - Criterion referenced
Key words: pass, 90% or higher
, Question - An Organization seeks to shift its business strategy to development of new
products for the future while still growing sales of its current products. Which tool could
help the company focus on both its financial objective and growth of new products?
A - Net Promoter Score
B - Six Sigma
C - Results Based Management
D - Balanced Scorecard - ANSWERD - Balanced Scorecard
Key words: strategy, focus on both, financial, growth
Question - There is an 70 percent chance of rain.
When it rains, there is a 10 percent chance of Todd walking to the store and there is
also a 15 percent chance of Todd having an umbrella. It is raining today. What
probability principle will determine if Todd will at least have his umbrella today?
A - Multiplication
B - Addition
C - Bayes
D - Combination - ANSWERB - Addition
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 - ANSWERB - 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 - Is there a relationship between number of training hours for counselors and
number of patient incidents requiring physical restraint? Staff training hours and 3 years
of monthly incidence data.
A - Regression
B - ANOVA
C - Multiple Regression
D - Chi-square - ANSWERA - Regression
Key words: relationship, hours, indicates
• If you see a 3, do not just assume that it is about ANOVA
