WGU The Data Analytics Journey (PLDC), (Top 2024/2025 EXAM REVIEW PAPERS / GRADED A+/ 100% Accurate)

WGU The Data Analytics Journey (PLDC) Which activity does an analyst perform in the discovery phase of the data analytics life cycle? - Identifying business needs In which phase of the data analytics life cycle does an analyst build a histogram? -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 -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? -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? -Cleaning data What might be developed by data analysts when acquiring data from a data warehouse? -The SQL queries of data within the tables What can be identified using a box plot? -Interquartile range 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. 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 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 During which phase in the data analytics life cycle would a churn analysis be performed? - Predictive analysis Which mistake is commonly made during the predictive analytics phase? -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? - 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? - 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? -Data mining What strategy will contribute to effective data representation and reporting? -Excluding unrelated data What are two purposes of the reporting phase of the data analytics life cycle? -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? - Data reporting What is a common duty of a datab