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WGU D204 Exam Questions With Correct Answers Latest Updated 2024/2025 Rated A+. A data set has K variables, and the classifying method has the following steps: compare levels on nearby data, assign a new case to a category of nearby beta, locate the case in a k-dimensional space, in which order should the steps be applied a. Assign compare locate b. Compare assign locate c. Locate compare assign d. Locate assign compare - ANSWER-c. Locate compare assign In which phase of the data analytics life cycle does an analyst build a graph? a.Data exploration b.Discovery c.Predictive modeling d.Data acquisition - ANSWER-a.Data exploration An analyst applies a statistical formula to obtain the average temperature for a city over the last 20 years. Which phase of the data analytics life cycle is represented by this activity? a.Discovery b.Exploration c.Modeling d.Reporting - ANSWER-b.Exploration An analyst has been asked to define variables in a dataset that may contain missing values. Which activity of the analytics life cycle is represented? a.Data collection b.Data cleaning c.Transforming improperly text d.Disqualifying data sources - ANSWER-b.Data cleaning Which activity does an analyst perform in the discovery phase of the data analytics life cycle? a.Collecting data WGU D204 Exam Questions & Answers Latest Updated 2024/2025 | Scored A+ b.Cleaning data c.Identifying outliers d.Defining business goals - ANSWER-d.Defining business goals During which phase in the data analytics life cycle would a churn analysis be performed? a.Data cleaning churn b.Data acquisition c.Predictive analysis d.Representation and reporting - ANSWER-c.Predictive analysis What might be developed by data analysts when acquiring data from a data warehouse? a.The procedures for extracting files from the data warehouse b.The procedures for updating tables in the data warehouse c.Relational structures of tables d.The SQL queries of data within the tables - ANSWER-d.The SQL queries of data within the tables Which aspect of data exploration occurs when an analyst writes code to compile a bar graph of dog food sales per month? a. Performance of a correlation analysis b. Analysis of data anomalies c. Verification through visualization d. Determination of variabilities - ANSWER-c. Verification through visualization An oil company uses robots and sensors to detect how pipeline corrosion changes over time. The collected data is then used in a predictive model that estimates when a pipe should be replaced. How does the predictive model serve this oil company? a. To minimize interruptions from maintenance shutdowns b. To minimize the need for workforce safety training c. To improve compliance with pipeline construction standards d. To improve compliance with pipeline disposal standards - ANSWER-a. To minimize interruptions from maintenance shutdowns What is the necessary requirement when collecting data from different data sources a.Data must be easy to understand b.Data must have defined structure c.Data must have great number of variable d.Data must have features related to business goals - ANSWER-d.Data must have features related to business goals Which mistake is commonly made during the predictive analytics phase? a. The data are separated into different sets. b. The variables are separated into response and independent variables. c. The data are prepared before the model is developed. d. The model is developed before the research question is known. - ANSWER-d. The model is developed before the research question is known. Why might a data analyst resample a data set with replacement data in a data mining project? a.Misidentification of causation b.Wrong variables chosen for analyzation c.Too little data for training and testing data sets d.Skewed data resulting from outliers - ANSWER-c.Too little data for training and testing data sets Ex. The data team has processed the data and ... who will give the reports and explanation to higher level? a. Data Analyst b. Data owner c. Data researcher d.None of the above - ANSWER-c. Data researcher An analyst realizes that the data set has been reduced significantly, resulting in sample sizes that are too small. In which phase of the data analytics life cycle did this likely occur? a. Data exploration b. Data modeling c. Data mining d. Data discovery - ANSWER-c. Data mining What strategy will contribute to effective data representation and reporting? a.Creating a new training data set b.Selecting data for a prediction model c.Excluding unrelated data d.Extracting data from source repositories - ANSWER-c.Excluding unrelated data What are two purposes of the reporting phase of the data analytics life cycle? Select two answers: a.Provide the conclusions from the analysis in an engaging manner b.Provide a tool for decision-makers to import and analyze more data c.Provide actionable insights that can inform decision-making d.Provide an automated way for decision-makers to test their own models - ANSWERa.Provide the conclusions from the analysis in an engaging manner c.Provide actionable insights that can inform decision-making A data analyst identified combinations of sales that frequently occur together in data over the past 5 years. Which phase of the data analytics life cycle is represented by this analysis? a.Data acquisition b.Representation and reporting c.Data mining d.Predictive modeling - ANSWER-c.Data mining During which phase of the data analytics life cycle does an analyst create a story to report data? a.Data acquisition b.Data mining c.Data reporting d.Data cleaning - ANSWER-c.Data reporting What is a characteristic of active listening? a.Active working on a task while listening to the speaker b.Seeking to understand the speaker's emotions and intent c.Focusing intently on the content of the message d.Waiting patiently to share one's own thoughts - ANSWER-b.Seeking to understand the speaker's emotions and intent What will be a consequence of poor attention to detail during the data exploration phase? a.Not enough variables will be considered in the analysis. b.The outcome of the analysis will be misaligned to business needs. c.The analyst will lack insight into the structure of the data set. d.The model will be built using the wrong data set. - ANSWER-c.The analyst will lack insight into the structure of the data set. Data visualization can be considered an example of what? science without big data b.Data science with big data c.Both A and B d.None of the above - ANSWER- science without big data Who is a data science project unicorn? The mythical person with the following skills. a.Research, Analytics & Project Management b.Research and Analytics c.Project Management and Analytics d.Research and Project Management - ANSWER-a.Research, Analytics & Project Management ___________makes predictions about future state of a company. Forecasting volumes for example. Based on last summer and winder, what will be sold next summer. a.Diagnostic Analytics b.Descriptive Analytics c.Predictive Analytics d.Prescriptive Analytics - ANSWER-c.Predictive Analytics _____________analysis to recommend solution. What product types and quantity should be sold to increase profits? a.Predictive Analytics b.Descriptive analytics c.Prescriptive Analytics d.Diagnostic Analytics - ANSWER-c.Prescriptive Analytics What is a common duty of a database administrator? a.Set project timelines, milestones, and goals b.Acquire funding for data analytics projects c.Maintain data on the IT infrastructure d.Define business needs at the onset of the project - ANSWER-c.Maintain data on the IT infrastructure What is an example of an external stakeholder for a data analytics project? a. President/CEO b. Project manager c. Regulatory body d. Data analyst's supervisor - ANSWER-c. Regulatory body Which party has the primary vision for a data analytics project and brings resources to complete it? a. Project sponsors b. Project managers c. Customers d. Data analysts - ANSWER-a. Project sponsors What does the critical path represent in data analytics project management? a.Minimum time to complete independent tasks b.Maximum time to complete independent tasks c.Minimum time to complete dependent tasks d.Maximum time to complete dependent tasks - ANSWER-c.Minimum time to complete dependent tasks A data analytics project manager has been asked to complete a project on a very short timeline. Which action is likely to yield positive results? a.Outsource the skilled work to an unproven vendor b.Expand the team with experienced staff c.Require current team to work overtime d.Accept lowered quality standards - ANSWER-b.Expand the team with experienced staff Which type of project management problem occurs when a data mining task has started but a data acquisition task had not been completed? a.Scope b.Schedule c.Procedure d.Cost - ANSWER-b.Schedule How can an organization improve interprofessional communication among team members? a.By setting work priorities for team members b.By requiring weekly updates on project deadlines c.By using tools that provide a team-based collaboration space d.By ensuring employees can recite the desired outcomes - ANSWER-c.By using tools that provide a team-based collaboration space A data analyst needs to contact a specific member of the database administration team. Which method should be used to discover the person's email address? a.Ask the project's customers b.Ask the project's sponsors c.Send an email to project stakeholders d.Send an email to the team's manager - ANSWER-d.Send an email to the team's manager Which feature is commonly found in collaboration tools like Jira, Slack, Teams, and Pivotal Tracker? a.Real-time messaging b.Multivariate analysis c.Equation editor d.Source code management - ANSWER-a.Real-time messaging Which action can the project manager take to keep the team engaged in the analytics project? a.At the end of the project, the tam publishes an extensive research report and includes it in an email to project stakeholders. b.Throughout the project, the project manager communicates insights from the data analytics team and provides ideas of ways to act on those insights. c.At the end of the project, the project manager sends an email with the predictive model to the stakeholders so they can use it. d.Throughout the project, the project manager holds regular meetings so the entire data analytics team can showcase their work to different departments. - ANSWERb.Throughout the project, the project manager communicates insights from the data analytics team and provides ideas of ways to act on those insights. What is an effective method for a data analyst to prepare for a one-on-one meeting with a manager? a.Make a written list of all source code comments b.Ask other inside employees about the manager's reputation c.Bring a set of questions to draw on to keep the conversation going d.Create an essay summarizing steps in the source code. - ANSWER-c.Bring a set of questions to draw on to keep the conversation going A/B testing is performed on website, and it's known that there is 30% raise in A? a.Causal b.Normal c.All of the above d.None of the above - ANSWER-a.Causal A website was updated with filters, but still customers search the product? Reason a.The filters is not visible b.The customers know what product to purchase c.The customer wants to run multiple product search to compare d.None of the above - ANSWER-b.The customers know what product to purchase Which circumstance could cause a data analyst to have difficulty developing a model to answer a business question? a. Project scope creep b. Poor project budgeting c. Lack of relevant data sources d.Lack of stakeholder support - ANSWER-c. Lack of relevant data sources A data analytics project team is preparing to develop a predictive model that will be included within a business intelligence tool for upper management. Which step should be considered for inclusion when creating the project schedule? a. Model testing and validation for users b. Business intelligence tool interface training c. Model training and testing for stakeholders d. Business intelligence tool data transformation training . - ANSWER-b. Business intelligence tool interface training Which task would an analyst consider first during the discovery phase of the data analytics lifecycle? a. Seek out necessary data sources. b. Formulate a project plan. c. Identify project goals. d. Develop key metrics. - ANSWER-c. Identify project goals. Numerical measurements of the amount of a toxic chemical substance are recorded in a large database. Which hypothesis can the data analyst answer through exploratory data analytic methods? a. The chemical will not cause harm to the habitat's native species. b. The chemical contamination is a result of human activity. c. The statistical distribution of the chemical measurements is normal. d. The best analytic approach for analyzing the data is linear regression. - ANSWER-c. The statistical distribution of the chemical measurements is normal. A restaurant owner wants to sponsor a data analytics project to provide insights regarding hamburger sales before developing a strategy for increasing sales. Which question is framed appropriately for the data analytics project? a. What are the characteristics of customers who buy hamburgers? b. What does the supply and demand curve look like for hamburgers? c. Which discount coupons should we send to neighborhood residents? d. Which varieties of hamburgers are featured by competitors? - ANSWER-a. What are the characteristics of customers who buy hamburgers? Which organizational objective could be accomplished with a descriptive data analytics project using website request logs as a data source? a. Explain why web data transfer has increased 25% b. Estimate the traffic increase for a new product launch c. Improve the speed of server request processing d. Recommend a strategy to increase network capacity - ANSWER-a. Explain why web data transfer has increased 25% A travel website tabulated the results of their latest marketing campaign to understand the relationship of clicks-to-sales conversions. Which area of analytics does this activity represent? a. Prescriptive b. Proactive c. Descriptive d. Predictive - ANSWER-c. Descriptive

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

1.What questions will data analytics consider improving 10% market share
H H H H H H H H H

value to open new store in a different location?
H H H H H H H H H

a. Get list of geographic areas
H H H H

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
H H H H H H H H

2.A data set has K variables, and the classifying method has the following
H H H H H H H H H H H H

steps:
H

compare levels on nearby data, assign a new case to a category of nearby beta,
H H H H H H H H H H H H H H

locate the case in a k-dimensional space, in which order should the steps be
H H H H H H H H H H H H H H

applied
H

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
H H H H H H H

3.In which phase of the data analytics life cycle does an analyst build a
H H H H H H H H H H H H H

graph?
H

H H

,a.Data exploration
H

b.Discovery
H

c.Predictive modeling
H H

d.Data acquisition: ANS a.Data exploration
H H H H

4.An analyst applies a statistical formula to obtain the average temperature
H H H H H H H H H H

for a city over the last 20 years. Which phase of the data analytics life cycle is
H H H H H H H H H H H H H H H H H

represented by this activity?
H H H H

a.Discovery
b.Exploration
H

c.Modeling
H

d.Reporting: ANS b.Exploration H H

5.An analyst has been asked to define variables in a dataset that may contain
H H H H H H H H H H H H H

missing values. Which activity of the analytics life cycle is represented?
H H H H H H H H H H H

a. Data collection H

b. Data cleaning H

c.Transforming improperly text
H H H

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
H H H H H H H H H H H H

analytics life cycle?
H H H

a. Collecting
data b.Cleaning
H H

data
H

H H

,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
H H H H H H H H H H H H

be performed?
H H

a. Data cleaning churn H H

b. Data acquisition H

c.Predictive
H

analysis
H

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
H H H H H H H H H H H H

warehouse?
H

a. The procedures for extracting files from the data warehouse
H H H H H H H H

b. The procedures for updating tables in the data warehouse
H H H H H H H H

c.Relational structures of tables
H H H H

d.The SQL queries of data within the tables: ANS d.The SQL queries of data
H H H H H H H H H H H H H

within the tables
H H H

9.Which aspect of data exploration occurs when an analyst writes code to
H H H H H H H H H H H

compile a bar graph of dog food sales per month?
H H H H H H H H H H

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
H H H H H H H H H H H

changes over time. The collected data is then used in a predictive model that
H H H H H H H H H H H H H H

estimates when a pipe should be replaced.
H H H H H H H

How does the predictive model serve this oil company?
H H H H H H H H

H H

, a. To minimize interruptions from maintenance shutdowns
H H H H H

b. To minimize the need for workforce safety training
H H H H H H H

c. To improve compliance with pipeline construction standards
H H H H H H

d. To improve compliance with pipeline disposal standards: ANS a. To
H H H H H H H H H

minimize interruptions from maintenance shutdowns
H H H H H

11.What is the necessary requirement when collecting data from different
H H H H H H H H H

data sources
H H

a. Data must be easy to understand
H H H H H

b. Data must have defined structure
H H H H

c. Data must have great number of variable
H H H H H H

d. Data must have features related to business goals: ANS d.Data must have
H H H H H H H H H H H

features related to business goals
H H H H H

12.Which mistake is commonly made during the predictive analytics phase?
H H H H H H H H H

a. The data are separated into different sets.
H H H H H H

H H

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