WGU D204 Exam Questions With Correct Answers Latest Updated 2024/2025 Rated A+.

WGU D204 Exam Questions With Correct
Answers Latest Updated 2024/2025 Rated
A+.


1. What questions will data analytics consider improving 10% market share
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value to open new store in a different location?
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a. Get list of geographic areas
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b. Reduce staff pay by 10% ,/H ,/H ,/H ,/H




c. Check compatible market value ,/H ,/H ,/H




d. None of the above:ANS C Check compatible market value
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2. A data set has K variables, and the classifying method has the following
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steps:
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compare levels on nearby data, assign a new case to a category of nearby beta,
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locate the case in a k-dimensional space, in which order should the steps be
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applied
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a. Assign compare locate ,/H ,/H




b. Compare assign locate ,/H ,/H




c. Locate compare assign ,/H ,/H




d. Locate assign compare: ANS c. Locate compare assign
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3. In which phase of the data analytics life cycle does an analyst build a
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graph?
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,a.Data exploration ,/H




b.Discovery
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c.Predictive modeling
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d.Data acquisition: ANS a.Data exploration
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4. An analyst applies a statistical formula to obtain the average temperature
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for a city over the last 20 years.Which phase of the data analytics life cycle is
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represented by this activity?
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a.Discovery
b.Exploration
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c.Modeling
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d.Reporting: ANS b.Exploration ,/H ,/H




5. An analyst has been asked to define variables in a dataset that may contain
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missing values.Which activity of the analytics life cycle is represented?
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a. Data collection ,/H




b. Data cleaning ,/H




c.Transforming improperly text
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d.Disqualifying data sources: ANS b.Data cleaning ,/H ,/H ,/H ,/H ,/H




6. Which activity does an analyst perform in the discovery phase of the data
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analytics life cycle?
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a. Collecting data ,/H




b.Cleaning data
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,c. Identifying outliers ,/H




d. Defining business goals: ANS d.Defining business goals ,/H ,/H ,/H ,/H ,/H ,/H




7. During which phase in the data analytics life cycle would a churn analysis
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be performed?
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a. Data cleaning churn ,/H ,/H




b. Data acquisition ,/H




c.Predictive analysis
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d.Representation and reporting: ANS c.Predictive analysis ,/H ,/H ,/H ,/H ,/H




8. What might be developed by data analysts when acquiring data from a data
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warehouse?
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a. The procedures for extracting files from the data warehouse
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b. The procedures for updating tables in the data warehouse
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c.Relational structures of tables
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d.The SQL queries of data within the tables: ANS d.The SQL queries of data
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within the tables
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9. Which aspect of data exploration occurs when an analyst writes code to
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compile a bar graph of dog food sales per month?
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a. Performance of a correlation analysis ,/H ,/H ,/H ,/H




b. Analysis of data anomalies ,/H ,/H ,/H




c. Verification through visualization ,/H ,/H




d. Determination of variabilities: ANS c.Verification through visualization ,/H ,/H ,/H ,/H ,/H ,/H ,/H




10. An oil company uses robots and sensors to detect how pipeline corrosion
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changes over time. The collected data is then used in a predictive model that
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estimates when a pipe should be replaced.
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How does the predictive model serve this oil company?
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a. To minimize interruptions from maintenance shutdowns
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, b. To minimize the need for workforce safety training
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c. To improve compliance with pipeline construction standards
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d. To improve compliance with pipeline disposal standards: ANS a.To
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minimize interruptions from maintenance shutdowns
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11. What is the necessary requirement when collecting data from different
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data sources
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a. Data must be easy to understand
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b. Data must have defined structure
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c. Data must have great number of variable
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d. Data must have features related to business goals: ANS d.Data must have
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features related to business goals
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12. Which mistake is commonly made during the predictive analytics phase?
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a. The data are separated into different sets.
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