WGU D204 The Data Analytics Journey (PLDC) Exam Solved 100%

Which activity does an analyst perform in the discovery phase of the data analytics life cycle? - Answer Identifying business needs In which phase of the data analytics life cycle does an analyst build a histogram? - Answer Data exploration 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 - Answer Exploratory data analysis An analyst has been tasked with defining data columns that could contain null values. Which activity of the data acquisition phase is represented? - Answer Detecting missing values 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? - Answer Cleaning data What might be developed by data analysts when acquiring data from a data warehouse? - Answer The SQL queries of data within the tables What can be identified using a box plot? - Answer Interquartile range What will be a consequence of poor attention to detail during the data exploration phase? - Answer The analyst will lack insight into the structure of the data set. Which aspect of data exploration occurs when an analyst writes code to compile a bar graph of dog food sales per month? - Answer 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? - Answer To minimize interruptions from maintenance shutdowns During which phase in the data analytics life cycle would a churn analysis be performed? - Answer Predictive analysis Which mistake is commonly made during the predictive analytics phase? - Answer 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? - Answer Too little data for training and testing data sets 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? - Answer Data mining 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? - Answer Data mining What strategy will contribute to effective data representation and reporting? - Answer Excluding unrelated data What are two purposes of the reporting phase of the data analytics life cycle? - Answer Provide the conclusions from the analysis in an engaging manner Provide actionable insights that can inform decision-making During which phase of the data analytics life cycle does an analyst create a story to report data? - Answer Data reporting What is a common duty of a database administrator? - Answer Maintain data on the IT infrastructure What is an example of an external stakeholder for a data analytics project? - Answer Regulatory body Which party has the primary vision for a data analytics project and brings resources to complete it? - Answer Project sponsors What does the critical path represent in data analytics project management? - Answer 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? - Answer 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 has not been completed? - Answer Schedule How can an organization improve interprofessional communication among team members? - Answer 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? - Answer Send an email to the team member's manager Which feature is commonly found in collaboration tools like Jira, Slack, Teams, and PivotalTracker? - Answer Real-time messaging Which action can the project manager take to keep the team engaged in the analytics project? - Answer 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? - Answer Bring a set of questions to draw on to keep the conversation going