WGU C207 Data-Driven Decision-Making Exam (Latest 2023/ 2024 Update) Questions and Verified Answers- 100% Correct| Grade A
WGU C207 Data-Driven Decision-Making
Exam (Latest 2023/ 2024 Update) Questions
and Verified Answers- 100% Correct| Grade
A
Q: What is the process of quality control?
Answer:
Reduce/ minimize errors
Q: All variable measurements and manipulations are under the researcher’s control
Answer:
Experimental study
Q: Used when impractical or impossible to control the conditions of the study
Answer:
Observational study
Q: Participants are not told if they are in the treatment group or control group
Answer:
Blind Study
Q: The procedure the researcher applies to each subject
Answer:
Treatments
Q: Neither the treatment allocator nor the participants know who is in the treatment group or
control group
Answer:
Double blind study
Q: Questions favor and outcome or the interviewer ask questions that favor an outcome.
Answer:
Information Bias
Q: The average outcome (payoff) when the future includes scenarios that may or may not
happen
Answer:
Expected Monetary Value (EMV) Analysis
Q: Observation points that are distant from other observations.
Answer:
Outliers
Note: Can be included or excluded in analysis (causes skewness)
Q: Bias that occurs from not selecting a random sample
Answer:
Measurement bias
Q: Bias introduced because respondents believe it will be beneficial if selected.
Answer:
Conscious bias
Q: Middle score for a set of data
Answer:
Median
Note: Skewness does not affect the median
Q: Tells us the number of standard deviations a data point is from the mean.
Answer:
Z-score = (Value – Mean) / Std Deviation
Q: If the average is the same for two groups, what will determine their difference?
Answer:
Variance (Standard Deviation)
Q: The spread of data in a sample. How far the data points are from the mean.
Answer:
Standard deviation
Q: Measure of central tendency that is influenced by the size of the values in a dataset
Answer:
Mean
Note: Skewness does affect the mean
Q: Each of the four quartile groups a population can be divided
Answer:
Quartiles
Q: Measures the difference between the third and first quartile
Answer:
IQR: Inter-quartile range
Note: Must be ordered in lowest to highest value
Q: Used to study the composition of a data set and examine the distribution
Answer:
Box Plot
Q: There are six toll booths to enter the highway. What probability does each toll booth worker
have of getting the next customer?
Answer:
1 customer and 6 booths = 1/6 or 16.7%
Q: The order you pick you sample in does not matter
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