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WGU D204 OBJECTIVE ASSESSMENT
Questions and Answers 2023 - 2024 (Verified Answers) 1.Which activity does an analyst perform in the discovery phase of the data analytics life cycle ANS identifying business needs 2.In which phase of the data analytics life cycle does the analyst build a histogram ANS data exploration 3.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 ANS exploratory data analysis 4.An analyst has been tasked with defining data columns that could contain null values. Which activity of the data acquisitions phase is represented ANS - detecting missing values 5.Which activity in the data analytics life cycle occurs during the data 1 / 2
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acquisition phase and requires the most time and effort from the data an- alyst ANS cleaning data 6.What might be developed by data analysts when acquiring data from a data warehouse ANS the SQL queries of data within the tables 7.What can be identified using a box plot ANS interquartile range 8.What will be the consequence of poor attention to detail during the data exploration phase ANS The analyst will lack insight into the structure of the data set 9.Which aspect of data exploration occurs when an analyst writes code to compile a bar graph of dog food sales per month ANS verification through visualization 10.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 ANS to minimize interruptions from maintenance shutdowns