WGU D204 Exam Questions & Answers Latest Updated 2024/2025 | Scored A+

What questions will data analytics consider improving 10% market share value to open new store in a different location? a. Get list of geographic areas b. Reduce staff pay by 10% c. Check compatible market value d. None of the above - ANSWER-C Check compatible market value 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 An analyst is looking at data that includes the customer's address, date of purchase, and age. Which question could be answered from this data? a. Which customer has spent the highest dollar amount? b. Which customer is most likely to respond favorably to the next marketing campaign? c. Which state has the highest total customers? d. Which product has sold the most in a certain state? - ANSWER-c. Which state has the highest total customers? Which outcome should be expected when working with data aggregated from multiple sources? Select two answers. a. Consistently named fields b. Inconsistently named fields c. Data needs cleaning d. Data does not need cleaning - ANSWER-b. Inconsistently named fields c. Data needs cleaning Which technique can a project manager use to foster the identification of quality data analytics questions? a. Organized project planning b. Rigorous data cleaning c. Frequent collaboration with the team d. Acquisition of abundant project resources - ANSWER-c. Frequent collaboration with the team A data analyst notices that the data selected for an analytics project is slightly misaligned with the research question. How can the data analyst resolve this situation? a. Halt the data analytics project to pursue a new research question b. Dive deeper into the data to identify data quality issues c. Adjust the research question to reframe the analysis d.Transform the data to a new metric - ANSWER-c. Adjust the research question to reframe the analysis An analyst has been asked to analyze the open-ended responses from customers on a satisfaction survey. Which type of data is the analyst working with on this project? a. Transactional b. Secondary c. Qualitative d. Quantitative - ANSWER-c. Qualitative A U.S. company collects and sells information on consumers. Which law prevents the company from collecting information on European Union consumers without their permission? a. Electronic Communications Privacy Act b. General Data Protection Regulation c. Stored Communication Act d. Information Nondiscrimination Act - ANSWER-b. General Data Protection Regulation A consumer sues an entertainment streaming company for leaking personal information regarding her viewing habits. Which ASA ethical standard did the streaming company violate? a. Conflict of interest b. Biases c. Privacy d. Unfair discrimination - ANSWER-c. Privacy A specific drug is manufactured for the treatment of depression. The company decides to ignore research results on an alternative, less expensive, drug treatment in order to make higher profits. Which ASA ethical standard has the company violated? a. Unfair discrimination b. Reproducible results c. Conflict of interest d. Transparent assumptions - ANSWER-c. Conflict of interest What is GDPR? a.General Data Protection Regulation EMAIL ME: For help with report, Assignment, Essay and thesis writing. b.General Data Protection Regression c.Good Data Protection Regulation d.Good Data Protection Regression - ANSWER-a.General Data Protection Regulation In data science, attention is drawn to forms of fairness, equity, and need. What does that mean to the Data Analyst? a.Legal issues b.Ethical issues c.Social issues d.Need issues - ANSWER-b.Ethical issues While analyzing data analyst notices that certain zip codes are not included in the data sample When researching the zip codes he realizes that the only zip codes represented are from the higher income areas of the state. What is this an example of? a.Gender bias b.Selection bias c.Age bias d.Confirmation bias - ANSWER-b.Selection bias The first step in the data science pathway is "define goals." Why is it the best place to start a data science project? a.Clarifying your project's goals up front will help you at every step of the project pathway, from framing questions, to choosing data and algorithms, and interpreting and applying your results. b.Goals influence every step of the data science pathway, from planning to wrangling to modeling to applying. c.Data Science project is different than other types of project d.Data Science project is based on the needs of the organization. - ANSWERa.Clarifying your project's goals up front will help you at every step of the project pathway, from framing questions, to choosing data and algorithms, and interpreting and applying your results. If a table or chart is publicly available, then it is also ethical to scrape the data for use in your data science project. a.True b.False - ANSWER-b.False An individual or group that has an interest in any decision or activity of an organization. a.Stakeholder b.Manager c.Project Manager d.Third Party - ANSWER-a.Stakeholder What is a project document that has information about the project stakeholders and identifies the people, groups, and organizations that have any interest in the work and the outcome? a.Stakeholder matrix b.Stakeholder register c.Risk matrix d.Stakeholder table - ANSWER-b.Stakeholder register Who is a project sponsor? a.A person responsible for identifying a project topic/scope that is well aligned with the strengths of the data analytics project and for providing access to necessary data and key support staff for continued project progress monitoring and timely feedback. b.A person who provides resources to the project c.A manager who is also a subject matter expert d.A third party who also a user of the project outcome - ANSWER-a. A person responsible for identifying a project topic/scope that is well aligned with the strengths of the data analytics project and for providing access to necessary data and key support staff for continued project progress monitoring and timely feedback. What is an iron triangle? a.A project budget b.The triple constraints c.The project schedule d.Quality - ANSWER-b.The triple constraints What technique uses charts and diagrams to schedule and estimate tasks and task durations. a.Scheduler b.Gantt chart c.Visualization map d.Estimating technique - ANSWER-b.Gantt chart What do open-source software tools and widely available analysis tools, such as spreadsheets, help accomplish? a. Data schemas b. Data democratization d. Data security c. Data compliance - ANSWER-b. Data democratization What is a feature of SQL? Choose 2 answers. a. It is an object-oriented programming language. b. The basic language is the same across database servers. c. It has built-in chart and graph creation. d. It is used with structured data and unstructured data. - ANSWER-b. The basic language is the same across database servers. d. It is used with structured data and unstructured data. What is an example of unstructured data? a. Names, dates, and addresses b. Credit card numbers that include a credit score c. Text messages that include video d. Height, weight, and gender - ANSWER-c. Text messages that include video Which tool should a researcher use to conduct a univariate analysis on complex statistical data? a. Tableau b. Power BI c. R d. SQL - ANSWER-c. R Which statistical technique should be used to draw conclusions about an entire population based on a representative sample? a. Correlation b. Bayes theorem c. Hypothesis testing d. Measures of central tendency - ANSWER-c. Hypothesis testing What is an example of random sampling of college students? a. Surveying students chosen arbitrarily from around the entire college campus b. Surveying every student in the college library c. Surveying students chosen arbitrarily in the library of the university d. Surveying every student on campus - ANSWER-a. Surveying students chosen arbitrarily from around the entire college campus Which type of analysis would be used to predict a binary outcome based on a set of independent variables? a. Hypothesis testing b. Descriptive statistics c. Regression d. Time Series - ANSWER-c. Regression Which type of data analysis is appropriate if the goal is to minimize the cost of a diet, using a data set consisting of the following variables: protein content, fat content, and cost per unit? a. Decision trees b. Calculus c. Optimization d. Bayes' theorem - ANSWER-c. Optimization Which technique can be used to determine the likelihood that a positive diagnostic test result indicates whether the disease is actually present? a. Bayes' theorem b. Central limit theorem c. Regression d. Optimization - ANSWER-a. Bayes' theorem Which concept should be considered when choosing variables for inclusion in a linear regression model? a. Feasibility of merging the variables b. Feasibility of controlling the variables c. Feasibility of testing the variables d. Feasibility of classifying the variables - ANSWER-b. Feasibility of controlling the variables A neural network algorithm in machine learning endeavors to recognize underlying relationships in a set of data. What does this process mimic? a. The way a computer processes data b. The way the human brain operates c. The way architects establish functionality d.The way that social media builds networks - ANSWER-b. The way the human brain operates Which characteristics are used to group data together in a cluster analysis? Choose 2 answers. a. Distance b. Similarity c. Shape d. Size - ANSWER-a. Distance b. Similarity Which tool has libraries that expand its visualization capabilities? a. Python b. Tableau c. Adobe Infographics d. D - ANSWER-a. Python Which tools can be used for performing statistics and creating interactive data visualization for large datasets from various sources? Choose 2 answers. a. Gantt Chart b. SQL c. Tableau d. R - ANSWER-c. Tableau d. R Which type of data representation should a data analyst use to display expense categories as a percentage of total business expenses? a. Map visualization b. Line chart c. Pie chart d. Scatter plot - ANSWER-c. Pie chart