WGU D207 DATA DRIVEN DECISION MAKING OA EXAM
AND STUDY GUIDE LATEST 2026 ACTUAL EXAM 500
QUESTIONS AND CORRECT DETAILED |ALREADY
GRADED A+
,A researcher concludes that bananas create healthy children because the
researcher's notes indicate that children who eat a banana every day are
healthy.Which misuse of statistics would this study be an example of if
these children also eat a balanced diet and exercise daily?
Unfounded assumptions
Lack of blinding
Faulty operationalization Confusion of association and causality -
ANSWER--Confusion of association and causality
In the month of December, there is a strong positive correlation between
airline ticket sales and retail sales.Which question should the researcher
consider before concluding that the correlation statistic implies that
airline sales drive retail sales?
Does a causal relationship truly exist?
Are the data biased?
Is the sample size large enough?
Does the sample accurately reflect the population? - ANSWER--Does a
causal relationship truly exist?
,WGU D207 DATA DRIVEN DECISION MAKING OA EXAM
AND STUDY GUIDE LATEST 2026ACTUAL EXAM 500
QUESTIONS AND CORRECT DETAILED |ALREADY
GRADED A+
A medical care provider determines the probability that a patient needs
treatment for a broken bone, the probability that a patient needs
treatment for a concussion, and the probability that a patient needs
treatment for both a broken bone and a concussion.Which two
techniques apply in finding the probability that a patient needs treatment
for a broken bone and a concussion?Choose 2 answers.
Intersection
Union
Multiplication principle Mutually exclusive - ANSWER--Intersection
Multiplication principle
A hardware store has found that there is a 0.25 probability that a
customer buys an electrical product, a 0.45 probability that a customer
buys a plumbing product, and a 0.10 probability that a customer buys an
electrical product if they purchase a plumbing product.Which statistical
rule can be used to determine the probability that a customer buys a
plumbing product given that this customer has purchased an electrical
product?
Bayes' theorem
Multiplication
Combination
, WGU D207 DATA DRIVEN DECISION MAKING OA EXAM
AND STUDY GUIDE LATEST 2026 ACTUAL EXAM 500
QUESTIONS AND CORRECT DETAILED |ALREADY
GRADED A+
Conditional probability - ANSWER--Bayes' theorem
Given the following data set:
9, 12, 14, 10, 8, 11, 12
What is the mode?
8
9
11
12 - ANSWER--12
Which graphical tool is used to illustrate a possible relationship or
correlation between two variables?
Run chart
Scatterplot
Box plot
Histogram - ANSWER--Scatterplot
AND STUDY GUIDE LATEST 2026 ACTUAL EXAM 500
QUESTIONS AND CORRECT DETAILED |ALREADY
GRADED A+
,A researcher concludes that bananas create healthy children because the
researcher's notes indicate that children who eat a banana every day are
healthy.Which misuse of statistics would this study be an example of if
these children also eat a balanced diet and exercise daily?
Unfounded assumptions
Lack of blinding
Faulty operationalization Confusion of association and causality -
ANSWER--Confusion of association and causality
In the month of December, there is a strong positive correlation between
airline ticket sales and retail sales.Which question should the researcher
consider before concluding that the correlation statistic implies that
airline sales drive retail sales?
Does a causal relationship truly exist?
Are the data biased?
Is the sample size large enough?
Does the sample accurately reflect the population? - ANSWER--Does a
causal relationship truly exist?
,WGU D207 DATA DRIVEN DECISION MAKING OA EXAM
AND STUDY GUIDE LATEST 2026ACTUAL EXAM 500
QUESTIONS AND CORRECT DETAILED |ALREADY
GRADED A+
A medical care provider determines the probability that a patient needs
treatment for a broken bone, the probability that a patient needs
treatment for a concussion, and the probability that a patient needs
treatment for both a broken bone and a concussion.Which two
techniques apply in finding the probability that a patient needs treatment
for a broken bone and a concussion?Choose 2 answers.
Intersection
Union
Multiplication principle Mutually exclusive - ANSWER--Intersection
Multiplication principle
A hardware store has found that there is a 0.25 probability that a
customer buys an electrical product, a 0.45 probability that a customer
buys a plumbing product, and a 0.10 probability that a customer buys an
electrical product if they purchase a plumbing product.Which statistical
rule can be used to determine the probability that a customer buys a
plumbing product given that this customer has purchased an electrical
product?
Bayes' theorem
Multiplication
Combination
, WGU D207 DATA DRIVEN DECISION MAKING OA EXAM
AND STUDY GUIDE LATEST 2026 ACTUAL EXAM 500
QUESTIONS AND CORRECT DETAILED |ALREADY
GRADED A+
Conditional probability - ANSWER--Bayes' theorem
Given the following data set:
9, 12, 14, 10, 8, 11, 12
What is the mode?
8
9
11
12 - ANSWER--12
Which graphical tool is used to illustrate a possible relationship or
correlation between two variables?
Run chart
Scatterplot
Box plot
Histogram - ANSWER--Scatterplot
