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D467 EXPLORING DATA (Computer Science) EXAM QUESTIONS AND ANSWERS WESTERN GOVERNORS’ UNIVERSITY
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D467 EXPLORING DATA (Computer Science) EXAM QUESTIONS AND ANSWERS WESTERN GOVERNORS’ UNIVERSITY
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D467 EXPLORING DATA (Computer Science) EXAM QUESTIONS ANDANSWERS WESTERN GOVERNORS’ UNIVERSITY
1. To track people's online activities and interests, Cookies
which method of data collection is most effective?
2. What are cookies? Small files stored
on computers that
contain informa-
tion about users
3. Fill in the blank: For data analytics projects, first-party
data is typically preferred because users know it orig-
inated within the organization.
4. In data analytics, what term refers to all possible data Population
values in a dataset?
5. A grocery store chain purchases customer data from Second-party
a credit card company. The grocer uses this data to
identify its most loyal customers and offer them spe-
cial promotions and discounts. What type of data is
being used in this scenario?
6. What type of data is the height of a skyscraper? Continuous
7. In data analytics, what is the term for data that is External
generated from, and lives, outside of an
8. Fill in the blank: A data model is used to organize data elements
and how they relate to one another.
9. When discussing structured databases, data ana- Field
lysts refer to the data contained in a row as a record.
How do they refer to the data contained in a column?
10. Fill in the blank: A data type is a specific kind of data attribute
that tells what kind of value the data is.
11. In a data table, where are fields contained? Columns
12. When using long data, each subject has data in multi- One observation
ple rows. This is because each row represents what? per subject
, D467 EXPLORING DATA (Computer Science) EXAM QUESTIONS AND
ANSWERS WESTERN GOVERNORS’ UNIVERSITY
13. Fill in the blank: The number of stars awarded to a discrete
product review is an example of data.
14. A data analyst works on an urgent traffic study. As Historical
a result of the short time frame, which type of data
might yield the best results?
15. A political scientist needs to poll all voters in Seoul, Using a sample
South Korea, in order to predict the outcome of an
election. Because it would be impossible to collect
data from every single person in the city, the polit-
ical scientist polls a part of the population that is
representative of the whole. What does this scenario
describe?
16. A data scientist at a tech company records whether Boolean
users have accepted their company's terms of ser-
vice or not. What data type is being collected in this
scenario?
17. Which of the following questions would enable a data Did anyone rec-
professional to collect nominal qualitative data? ommend our mu-
sic lessons to
you?
18. Fill in the blank: Bias is a preference in favor of conscious or sub-
or against a person, group of people, or thing. conscious
19. What is the term for the tendency to search for or Confirmation bias
interpret information in a way that validates pre-ex-
isting beliefs?
20. Fill in the blank: Data is considered when it reliable
is accurate, complete, and unbiased information that
has been vetted and proven fit for use.
21. A junior data analyst learns that the dataset they have Current
been given is six years old. After looking into this
further, they also discovered that the age of the data
, D467 EXPLORING DATA (Computer Science) EXAM QUESTIONS AND
ANSWERS WESTERN GOVERNORS’ UNIVERSITY
is making the information irrelevant to their project.
What good data source principle have they used to
evaluate the dataset?
22. What concept states that all data-processing activi- Transaction trans-
ties and algorithms should be completely explainable parency
and understood by the individual who provides their
data?
23. A data analyst removes personally identifying infor- Data anonymiza-
mation from a dataset. What task are they perform- tion
ing?
24. Before completing a survey, an individual acknowl- Consent
edges reading information about how and why the
data they provide will be used. What is this concept
called?
25. What are data ethics? Well-founded
standards of right
and wrong that
dictate how data
is collected,
shared, and used
26. Fill in the blank: Openness refers to access, free
usage, and sharing of data.
27. What is the preferred method for open data to be A convenient and
made available? modifiable internet
download
28. Legal right to access your data is an element of which Privacy
aspect of data ethics?
29. A data team at a nature preserve researches the ori- Cited
gin of a dataset to confirm it was created by a rep-
utable source, such as a nonprofit research institu-
tion. Which aspect of good data are they prioritizing?
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