WGU C207 Data Driven Decision Making Exam With 100% Correct Answers

WGU C207 Data Driven Decision Making Exam With 100% Correct Answers Frame the Problem, Solving the Problem and Communicating Results are part of which decision making model? - answerDavenport-Kim three-stage model In which stage of the Davenport-Kim model is problem recognition? - answerFraming the problem In which stage of the Davenport-Kim model is data collection? - answerSolving the problem What is a key reason we study statistics? - answerTo make informed decisions Visually presenting the data assists in which stage of the Davenport-Kim model? - answerCommunicating the results When does research fail to produce reliable results? - answerPoor research validity What are the two major issues surrounding research standards? - answerBest practices and ethics In order to be a statistically valid sample, the sample must be: - answerThe appropriate size and random Not selecting a random sample is what type of bias? - answerMeasurement Not selecting a right sized sample is what type of bias? - answerMeasurement Research best practices eliminate... - answerBias Outliers create this type of error - answerOut-of Range Unpredictable error - answerRandom Error - No correlation Error may occur from missing data. (Example: Space not filled in) - answerOmission Error - Distorted results This error repeats itself - answerSystematic Error - Skewed results Observation points that are distant from other observations. - answerOutliers Note: Can be included or excluded in analysis (causes skewness) Types of Bias: Bias that occurs from not selecting a random sample - answerMeasurement bias Types of Bias: Bias introduced because respondents believe it will be beneficial if selected. - answerConscious bias (key word: benefit) Consistent and repeatable data - answerReliable Resulting from accurate measurements - answerValid data If a responder lies on their survey, this creates what type of bias? - answerInformation Sorting your spreadsheet can expose these errors by moving them to the very top or the very bottom of the column - answerOmission or Out-of-Range An error that will fix itself over time - answerRandom An error that will not fix itself. You must do something - answerSystematic Cleaning and organizing data - answerData Management Are the following variable quantitative or qualitative? Personality type, social class, or communication style - answerQualitative A study used when you a conditions can't be controlled - answerObservational study Observes people going forward in time from the time of their entry into the study. - answerCohort Study What are the three elements of an experimental study? - answerUnit, Treatment, Response Accurately measures what it is intended to measure - answerValid data ________ an experimental study prevents bias. - answerBlinding Neither the treatment allocator nor the participant knows in which group the participant is contributing. (Who is getting the real drug?) - answerDouble blind study The participants are not told if they are in the treatment group or control group - answerBlind study Describes characteristics of a dataset. Mean, median, mode, variation, standard deviation, range.... - answerDescriptive analytics Uses data from t he past to predict the future - answerPredictive Uses experimental design and optimization to predict a future - answerPrescriptive If we move to six appointments an hour we can increase revenue 2%. Which form of analytics is this? - answerPrescriptive - We are taking a specific course of action Based on the last four quarters, we can predict $4,1 million in sales next quarter. Which form of analytics is this? - answerPredictive: We aren't taking any action The number of appointments per day averaged 7 over the last 6 months. Which form of analytics is this? - answerDescriptive: We a