(latest 2023) WGU C207 OA Partial test Questions with Answers

1. What are two potential uses of analytics? Choose 2 answers: a. To turn information into insight b. To develop fact-based strategies 2. Which two tools help users to understand processes? a. Control charts b. Flow charts 3. A scale is used to measure the thickness of randomly selected steel rods used in construction. It is accidentally programmed to add one millimeter to each rod. What is the resulting mistake representative of? a. Systematic error 4. Which type of result is produced from an analysis performed on a data set that has missing or omitted values? a. Distorted 5. Which kinds of data error is easier to check for when the data are organized in spreadsheets and relational databases? a. Calculation error 6. Which results could stem from using a quality control tool other than a control chart? a. Minimizing errors through the process of collecting data 7. Frame the problem, solving the problem and communicating results are part of which decision- making model? a. Davenport-Kim three stage model 8. In which stage of the Davenport-Kim model is problem recognition? a. Framing the problem 9. In which stage of the Davenport-Kim model is data collection? a. Solving the problem 10. What is a key reason we study statistics? a. To make informed decisions 11. Visually presenting the data assists in which stage of the Davenport-Kim model? a. Communicating the results 12. When does research fail to produce reliable results? a. Poor research validity 13. What are the two major issues surrounding research standards? a. Best practices and ethics 14. In order to be a statistically valid sample, the sample must be? a. The appropriate size and random 15. Not selecting a random sample is what type of bias? a. Measurement 16. Not selecting a right-sized sample is what type of bias? a. Measurement 17. Research best practices eliminate? a. Bias 18. Outliers create this type of error? a. Out-of-range 19. Unpredictable error? a. Random error - no correlation 20. Error may occur from missing data (EX: Space not filled in) a. Omission error – Distorted results 21. This error repeats itself? a. Systematic error – Skewed results 22. Observation points that are distant from other observations are? a. Outliers Note: Can be included or excluded in analysis (Courses skewness) 23. Types of bias: Bias that occurs from not selecting a random sample? a. Measurement bias 24. Types of bias: Bias is introduced because respondents believe it will be beneficial if selected? a. Conscious bias (Keyword benefit) 25. Consistent and repeatable data a. Reliable 26. Resulting from accurate measurements? a. Valid data 27. If a responder lies on their survey, this creates what type of bias? a. Information 28. Sorting your spreadsheet can expose these errors by moving them to the very top or the very bottom of the column? a. Omission or out-of-range 29. An error that will fix itself over time? a. Random 30. An error that will not fix itself, you must do something? a. Systematic 31. Cleaning and organizing data? a. Data management 32. Are the following variables quantitative or qualitative? Personality type, social class, or communication style? a. Qualitative 33. A study used when you a conditions can’t be controlled? a. Observational study 34. Observes people going forward in time from the time of their entry into the study? a. Cohort study 35. What are the 3 elements of an experimental study? a. Unit, Treatment, Response 36. Accurately measures what it is intended to measure? a. Valid data 37. are the experiment study preventing bias? a. Blinding 38. Neither the treatment allocator nor the participant tin which group the participant is contributing to (Who is getting the real drug)? a. Double blind study 39. The participants are not told if they are in the treatment group or control group? a. Blind study