WGU C207 Data Driven Decision Making Module 1- 6 Frame the Problem, Solving the Problem and Communicating Results are part of which decision making model? - ANSWER Davenport- Kim three-stage model In which stage of the Davenport-Kim model is problem recognition? - ANSWER Framing the problem In which stage of the Davenport-Kim model is data collection? - ANSWER Solving the problem What is a key reason we study statistics? - ANSWER To make informed decisions Visually presenting the data assists in which stage of the Davenport-Kim model? - ANSWER Communicating the results When does research fail to produce reliable results? - ANSWER Poor research validity 1 / 3
What are the two major issues surrounding research standards? - ANSWER Best practices and ethics In order to be a statistically valid sample, the sample must be: - ANSWER The appropriate size and random Not selecting a random sample is what type of bias? - ANSWER Measurement Not selecting a right sized sample is what type of bias? - ANSWER Measurement Research best practices eliminate... - ANSWER Bias Outliers create this type of error - ANSWER Out-of Range Unpredictable error - ANSWER Random Error - No correlation
Error may occur from missing data. (Example: Space not filled in) -
ANSWER Omission Error - Distorted results 2 / 3
This error repeats itself - ANSWER Systematic Error - Skewed results Observation points that are distant from other observations. - ANSWER
Outliers Note: Can be included or excluded in analysis (causes skewness)
Types of Bias: Bias that occurs from not selecting a random sample -
ANSWER Measurement bias Types of Bias: Bias introduced because respondents believe it will be beneficial if selected. - ANSWER Conscious bias (key word: benefit) Consistent and repeatable data - ANSWER Reliable Resulting from accurate measurements - ANSWER Valid data If a responder lies on their survey, this creates what type of bias? - ANSWER Information Sorting your spreadsheet can expose these errors by moving them to the very top or the very bottom of the column - ANSWER Omission or Out-of-Range
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