D204 WGU Study Set (Practice Assessment) with 100% correct answers

Which activity does an analyst perform in the discovery phase of the data analytics life cycle? Identifying business needs 3 MULTIPLE CHOICE OPTIONS In which phase of the data analytics life cycle does an analyst build a histogram? Data exploration 3 MULTIPLE CHOICE OPTIONS An analyst applies a statistical formula to obtain the average temperature for a city over the last 50 years. Which phase of the data analytics life cycle is represented by this activity? Exploratory data analysis 3 MULTIPLE CHOICE OPTIONS An analyst has been tasked with defining data columns that could contain null values. Which activity of the data acquisition phase is represented? Detecting missing values 3 MULTIPLE CHOICE OPTIONS Which activity in the data analytics life cycle occurs during the data acquisition phase and requires the most time and effort from the data analyst? Cleaning data 3 MULTIPLE CHOICE OPTIONS What might be developed by data analysts when acquiring data from a data warehouse? The SQL queries of data within the tables 3 MULTIPLE CHOICE OPTIONS What can be identified using a box plot? Interquartile range 3 MULTIPLE CHOICE OPTIONS What will be a consequence of poor attention to detail during the data exploration phase? The analyst will lack insight into the structure of the data set. 3 MULTIPLE CHOICE OPTIONS Which aspect of data exploration occurs when an analyst writes code to compile a bar graph of dog food sales per month? Verification through visualization 3 MULTIPLE CHOICE OPTIONS 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? To minimize interruptions from maintenance shutdowns 3 MULTIPLE CHOICE OPTIONS During which phase in the data analytics life cycle would a churn analysis be performed? Predictive analysis 3 MULTIPLE CHOICE OPTIONS Which mistake is commonly made during the predictive analytics phase? The model is developed before the research question is known. 3 MULTIPLE CHOICE OPTIONS Why might a data analyst resample a data set with replacement data in a data mining project? Too little data for training and testing data sets 3 MULTIPLE CHOICE OPTIONS A data analyst has identified combinations of sales transactions that frequently occur together in data over the past 5 years. Which phase of the data analytics life cycle is represented by this analysis? Data mining 3 MULTIPLE CHOICE OPTIONS 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? Data mining 3 MULTIPLE CHOICE OPTIONS What strategy will contribute to effective data representation and reporting? Excluding unrelated data 3 MULTIPLE CHOICE OPTIONS What are two purposes of the reporting phase of the data analytics life cycle? 1) Provide the conclusions from the analysis in an engaging manner 2) Provide actionable insights that can inform decision-making 3 MULTIPLE CHOICE OPTIONS During which phase of the data analytics life cycle does an analyst create a story to report data? Data reporting 3 MULTIPLE CHOICE OPTIONS What is a common duty of a database administrator? Maintain data on the IT infrastructure 3 MULTIPLE CHOICE OPTIONS What is an example of an external stakeholder for a data analytics project? Regulatory body 3 MULTIPLE CHOICE OPTIONS Which party has the primary vision for a data analytics project and brings resources to complete it? Project sponsors 3 MULTIPLE CHOICE OPTIONS What does the critical path represent in data analytics project management? Minimum time to complete dependent tasks 3 MULTIPLE CHOICE OPTIONS 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? Expand the team with experienced staff 3 MULTIPLE CHOICE OPTIONS Which type of project management problem occurs when a data mining task has started but a data acquisition task has not been completed? Schedule 3 MULTIPLE CHOICE OPTIONS How can an organization improve interprofessional communication among team members? By using tools that provide a team-based collaboration space 3 MULTIPLE CHOICE OPTIONS 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? Send an email to the team member's manager 3 MULTIPLE CHOICE OPTIONS Which feature is commonly found in collaboration tools like Jira, Slack, Teams, and PivotalTracker? Real-time messaging 3 MULTIPLE CHOICE OPTIONS Which action can the project manager take to keep the team engaged in the analytics project? Throughout the project, the project manager communicates insights from the data analytics team and provides ideas of ways to act on those insights. 3 MULTIPLE CHOICE OPTIONS What is an effective method for a data analyst to prepare for a one-on-one meeting with a manager? Bring a set of questions to draw on to keep the conversation going 3 MULTIPLE CHOICE OPTIONS What is a characteristic of active listening? Seeking to understand the speaker's emotions and intent 3 MULTIPLE CHOICE OPTIONS Which circumstance could cause a data analyst to have difficulty developing a model to answer a business question? Lack of relevant data sources 3 MULTIPLE CHOICE OPTIONS 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? Business intelligence tool interface training 3 MULTIPLE CHOICE OPTIONS Which task would an analyst consider first during the discovery phase of the data analytics lifecycle? Identify project goals. 3 MULTIPLE CHOICE OPTIONS 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? The statistical distribution of the chemical measurements is normal. 3 MULTIPLE CHOICE OPTIONS 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? What are the characteristics of customers who buy hamburgers? 3 MULTIPLE CHOICE OPTIONS Which organizational objective could be accomplished with a descriptive data analytics project using website request logs as a data source? Explain why web data transfer has increased 25% 2 MULTIPLE CHOICE OPTIONS