D467 WGU EXPLORING DATA |152
QUESTIONS| WITH ALL CORRECT
ANSWERS!!
To track people's online activities and interests, which method of data collection is most effective? Answer - Cookies What are cookies? Answer - Small files stored on computers that contain information about users Fill in the blank: For data analytics projects, _____ data is typically preferred because users know it originated within the organization. Answer - first-party In data analytics, what term refers to all possible data values in a dataset? Answer - Population A grocery store chain purchases customer data from a credit card company. The grocer uses this data to identify its most loyal customers and offer them special promotions and discounts. What type of data is being used in this scenario? Answer
- Second-party
What type of data is the height of a skyscraper? Answer - Continuous In data analytics, what is the term for data that is generated from, and lives, outside of an Answer - External Fill in the blank: A data model is used to organize _____ and how they relate to one another. Answer - data elements When discussing structured databases, data analysts refer to the data contained in a row as a record. How do they refer to the data contained in a column? Answer - Field Fill in the blank: A data type is a specific kind of data _____ that tells what kind of value the data is. Answer - attribute In a data table, where are fields contained? Answer - Columns When using long data, each subject has data in multiple rows. This is because each row represents what? Answer - One observation per subject 1 / 2
Fill in the blank: The number of stars awarded to a product review is an example of _____ data. Answer - discrete A data analyst works on an urgent traffic study. As a result of the short time frame, which type of data might yield the best results? Answer - Historical A political scientist needs to poll all voters in Seoul, 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 political scientist polls a part of the population that is representative of the whole. What does this scenario describe? Answer - Using a sample A data scientist at a tech company records whether users have accepted their company's terms of service or not. What data type is being collected in this scenario? Answer - Boolean Which of the following questions would enable a data professional to collect nominal qualitative data? Answer - Did anyone recommend our music lessons to you?Fill in the blank: Bias is a _____ preference in favor of or against a person, group of people, or thing. Answer - conscious or subconscious What is the term for the tendency to search for or interpret information in a way that validates pre-existing beliefs? Answer - Confirmation bias
Fill in the blank: Data is considered _____ when it is accurate, complete, and
unbiased information that has been vetted and proven fit for use. Answer - reliable A junior data analyst learns that the dataset they have been given is six years old.After looking into this further, they also discovered that the age of the data is making the information irrelevant to their project. What good data source principle have they used to evaluate the dataset? Answer - Current What concept states that all data-processing activities and algorithms should be completely explainable and understood by the individual who provides their data?Answer - Transaction transparency A data analyst removes personally identifying information from a dataset. What task are they performing? Answer - Data anonymization Before completing a survey, an individual acknowledges reading information about how and why the data they provide will be used. What is this concept called?Answer - Consent What are data ethics? Answer - Well-founded standards of right and wrong that dictate how data is collected, shared, and used
Fill in the blank: Openness refers to _____ access, usage, and sharing of data.
Answer - free
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