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