WGU D204 Questions & Answers Latest Updated

What are the 7 steps of the data analytics journey? - Answer Business Understanding (Discovery Phase) Data Acquisition (Data Collecting) Data Cleaning Data Exploration Predictive Modelling Data Mining Reporting & Visualization Define: discovery phase - Answer Analyst defines the major questions of interest that need to be answered, needs of the stakeholders and assesses the resource constraints of the project Define: data acquisition (data collecting) - Answer Frequently retrieved from a database What can an analyst do if data is not available? - Answer use tools like web scraping or surveys to get it. What happens if the data cleaning step is ignored? - Answer The results from the analysis become irrelevant What tools are used for data cleansing? - Answer SQL, Python, R, Excel What is data quality measured in terms of? (2) - Answer uniqueness, relevance Define: Data Exploration - Answer The analyst begins to understand the basic nature of data and the relationships within it