WGU C207 Data Driven Decision Making Exam (Answered) Verified Solution

WGU C207 Data Driven Decision Making Exam (Answered) Verified Solution Frame the Problem, Solving the Problem and Communicating Results are part of which decision making model? Davenport-Kim three-stage model In which stage of the Davenport-Kim model is problem recognition? Framing the problem In which stage of the Davenport-Kim model is data collection? Solving the problem What is a key reason we study statistics? To make informed decisions Visually presenting the data assists in which stage of the Davenport-Kim model? Communicating the results When does research fail to produce reliable results? Poor research validity What are the two major issues surrounding research standards? Best practices and ethics In order to be a statistically valid sample, the sample must be: The appropriate size and random Not selecting a random sample is what type of bias? Measurement Not selecting a right sized sample is what type of bias? Measurement Research best practices eliminate... Bias Outliers create this type of error Out-of Range Unpredictable error Random Error - No correlation Error may occur from missing data. (Example: Space not filled in) Omission Error - Distorted results This error repeats itself Systematic Error - Skewed results Observation points that are distant from other observations. Outliers Note: Can be included or excluded in analysis (causes skewness) Types of Bias: Bias that occurs from not selecting a random sample Measurement bias Types of Bias: Bias introduced because respondents believe it will be beneficial if selected. Conscious bias (key word: benefit) Consistent and repeatable data Reliable Resulting from accurate measurements Valid data If a responder lies on their survey, this creates what type of bias? Information Sorting your spreadsheet can expose these errors by moving them to the very top or the very bottom of the column Omission or Out-of-Range An error that will fix itself over time Random An error that will not fix itself. You must do something Systematic Cleaning and organizing data Data Management Are the following variable quantitative or qualitative? Personality type, social class, or communication style Qualitative A study used when you a conditions can't be controlled Observational study Observes people going forward in time from the time of their entry into the study. Cohort Study What are the three elements of an experimental study? Unit, Treatment, Response Accurately measures what it is intended to measure Valid data ________ an experimental study prevents bias. Blinding Neither the treatment allocator nor the participant knows in which group the participant is contributing. (Who