WGU C207 - Final Self-Assessment Questions and Answers with Complete Solutions

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WGU C207 - Final Self-Assessment Questions and Answers with Complete Solutions Amanda is measuring the temperature. She looks at the thermometer and sees that it is somewhere between 65 and 66 deg... rees Fahrenheit. She is okay with the temperature in between two integers because she knows temperature is not ________ data, but temperature is _________ data. ✔✔Discrete, Continuous The first stage of Davenport and Kim's Three Stage Model of quantitative decision making is to... ✔✔...frame the problem. A manager is looking at his previous quarter and determining the causes for the sudden sales spike to gain a better understanding of the actions and outcomes. If using analytics, which kind of analytics would the manager use? ✔✔Descriptive Analytics In a study of cancer treatments, the subjects and the treatment allocator (who is also the data gatherer) are unaware of which treatment is being given to which subject. This is a ____________ study. ✔✔Double-Blind Adam is measuring the temperature as the lake outside his office is freezing over. He measures the temperatures in Fahrenheit ten times with the same thermometer and gets the following results: 20, 18, 21, 20, 20, 14, 19, 21, 20, 19. Is his thermometer reliable? Is it valid? ✔✔Reliable but not Valid The thermometer consistently gives about the same number for the freezing point and therefore is reliable. It is not valid because it does not accurately measure what it is trying to measure. We know this because we know water freezes at 32 degrees Fahrenheit. Toby is trying to determine the number of people at today's parade in order to determine the impact of advertising at parades. He asks a number of different people leaving the parade their projected number of attendants. He gets the following responses: 70,000; 450,000; 2,000; 130,000; 3,000,000; 75,000; 200,000; 800,000; 150,000; and 210,000. Is this survey reliable? Is it valid? ✔✔Not Reliable or Valid Harry is doing a survey of the city of Los Angeles' population. He is wondering everyone's favorite food. He sends out a survey to all of the home-owners and renters in the city and receives basically all of the surveys back in the mail. What is the flaw with this experiment? ✔✔Truly Representative Sample (doesn't include the homeless) Tom Brady is on the street in Chicago. He is asking anyone he meets if they prefer Tom Brady or Peyton Manning. The survey results show that people greatly prefer Tom Brady. What is the flaw with this experiment? ✔✔Response Bias as the respondents might be responding believing that Tom Brady wants to hear that they prefer him over Peyton Manning. This is not Conscious bias as conscious bias would be in the way Tom Brady is asking a question and this scenario does not indicate any bias in that way. Determine the Mean, Median, and Mode (in that order) from the following test results. 23, 54, 67, 71, 72, 74, 74, 75, 77, 77, 77, 78, 80, 81, 81, 83, 84, 86, 89, 89, 89, 89, 95, 99, 100 ✔✔78.56, 80, 89 What percent of the data in a normal distribution is between the mean and two standard deviations above the mean? ✔✔47.7 percent A Pareto chart is a type of ________. ✔✔bar chart Cluster analysis sorts data points into ___ [Show More]

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