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 degrees Fahrenheit. She
...
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 degrees 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 ___
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