WGU D491 Data Analytics Final Exam 2025

Alpine Miner - -Provides GUI for creating workflows SAS/ACCESS - -Provides integration between SAS and analytics sandbox What phase in the data analytics lifecycle involves the Analytic Sandbox? - -Data Preparation What phase in the DA lifecycle consist of clarifying, conditioning and becoming familiar with the data? - -Data Preparation After collecting datasets what is a useful step to examine the data quality? - -Survery and data visualization What phase is the Apline Miner tool used? - -Data Preparation What is the Hadoop tool used for in the Data Preparation phase? - -Perform parallel analysis for web traffic parsing, GPS location, and combining unstructured data feeds from multiple sources. OpenRefine - -Free, open source tool for working with messy data What is the interactive tool used for data cleaning and transformation? - -Data Wrangler Who assists the team in the Data Preparation phase? - -IT, Database Administrators, or whoever controls enterprise data warehouse. What phase do you work with the analytics sandbox ? - -Data Preparation phase What is the data preparation phase for? - -To gather enough good quality data and understand the data. What is the model planning phase? - -During this phase you identify potential models to apply to the data. What are common tools for the model planning phase? - -(3) R, SQL, SAS/ACCESS What is the Execution phase? - -The phase that involves developing data sets to train and test. WGU D491 WGU D491 What type of tools are used during the execution phase? - -Programming tools (I.e. SAS enterprise miner, SPSS modeler, MatLab, Alpine Miner, R, Python, SQL) What is the communication phase for? - -This phase is where the team compares the outcome to the criteria established at the beginning. What phase is the project determined a fail or success? - -Communication phase What is the operationalize phase? - -In this phase, the benefits of the project will be shared widely and a pilot project will deploy on a wide scale. Why does the team do a pilot deploy before a final? - -So the team can monitor the system and manage the risks. regression analysis - -Statistical method used to determine whether a relationship exists between a dependent variable and 1 or more independent variables Clustering - -Segment customers based on similarities. Used to create personalized marketing Association rules - -Identify patterns/ relationships between products or services. Used to see what items are purchased together time series analysis - -Devils informed investment strategies while mitigating financial risk. Can identify seasonal trends or cycles. market basket analysis - -Analyzes purchases made together to help decide product placement, promotions, and pricing. T-test - -Compares two independent samples. correlation analysis - -Measures association with a range from -1 to +1 P-vaule - -Number used to tell how likely what was observed was by chance Naive Bayes Analysis - -Assumes everything is independent. Class predictor probability What phase uses SPSS modeler? - -Model execution/ building A pharmaceutical company wants to understand if a new drug reduces fevers. The data suggest a fever reduction when using the drug. The companies data analysis study the data to determine whether the effect observed could've occurred by chance. Which data analytic calculation should the analysis perform? - -P-value WGU D491 WGU D491 An energy company wants to predict future energy demand to optimize production. The company has an extensive data set on historical energy usage. Which analytic technique is best suited for this scenario? - -Time Series A data analysis working for a retail company, analyzes the purchasing behavior of customers to identify patterns and recommend products Which data analytic technique is most appropriate for analyzing the transaction data? - Association rules analysis A car manufacturing company is looking to improve its production by analyzing how factors such as temperature humidity and machine performance affect, production efficiency. To identify the key factor that affects efficiency, the most, in analysis uses the regression analysis technique. What justifies the use of regression analysis for the given task? - -Regression analysis is used to analyze the relationship between one or more independent variables, and a dependent variable A retail company wants to improve customer satisfaction by understanding the factors that influence customer loyalty. The company has collected customer feedback data from different sources, such as online surveys, social media platforms and customer support calls. Which data analytic technique should be used to identify the factors influencing customer loyalty based on the collected customer feedback? - -Text Analysis A company will survey its customers to understand the potential demand for a new product. A data analysis will review the data. Which question should the analysis consider to validate the representativity of the data? - -What is the response rate for the survey? A data analysis plans to explore possible indicators of fraud and bank transactions. The analysis is considering different tools that can be used to collect the data needed. Which question should the analysis consider when identifying the tool to use? - -What is the format and structure of the data? A data analysis is working on a project to identify the main reasons for customer complaints and is planning to review the data. Which question should the analysis consider in this scenario. - -Are all the relevant variables present? Who offers suggestions on ideas to test the teams formulates hypotheses during the discovery phase of the data analytics? - -Data scientist WGU D491 Who should be included as stakeholders in an analytics project? - -Anyone who will benefit from the project Why is formulating an additional hypothesis and Ingal part of the discovery phase of the data analytics life cycle? - -A guides, the subsequent data collection processing and analysis activities Which stakeholder extracts and transform data during the discovery phase? - -Data engineer Which stakeholder has access to essential tables or storage systems, and guarantees the highest levels of security in the data repository? - -Database administrator What is a scale required of a data engineer? - -Maintaining databases