Data wrangling - Study guides, Class notes & Summaries

WGU D204 - MW Data Analytics Life Cycle Exam Questions and Answers 100% Pass Many versions but one proposed in this class: 1) Business Understanding 2) Data Acquisition 3) Data Cleaning 4) Data Exploration 5) Predictive Modeling 6) Data Mining/Machine Learning 7) Reporting and Visualization and loop back at this point - Answer- What are the phases of the data analytics life cycle proposed by WGU? This phase is also known as the discovery phase. During this phase, an analyst defines ...

Data scientists are able to find ______, _________, and _____ in unstructured data. - Answer order, meaning, and value What is involved in the planning phase? - Answer 1. Defining goals 2. Organizing resources 3. Coordinate people 4. Schedule project What is involved in the wrangling phase? - Answer 5. Get data 6. Clean data 7. Explore data 8. Refine data What is involved in the Modeling phase? - Answer 9. Create model 10. Validate model

WGU D204 Data Analytics Journey Exam Questions and Answers 100% pass Data scientists are able to find ______, _________, and _____ in unstructured data. - Answer- order, meaning, and value What is involved in the planning phase? - Answer- 1. Defining goals 2. Organizing resources 3. Coordinate people 4. Schedule project What is involved in the wrangling phase? - Answer- 5. Get data 6. Clean data 7. Explore data 8. Refine data What is involved in the Modeling phase? - Answer- 9. Creat...

WGU D204 Study Set Questions and Answers 100% Pass Which of these is NOT a topic of interest for Discovery/Planning/Business Understanding? A. Project Scope B. Identify stakeholders and research questions/KPIs C. Build a data pipeline (ETL) D. Identify timeline, budget, and participants - Answer- C What is a potential problem to consider in the planning phase? A. Lack of clear focus on stakeholders, timeline, limitations, and budget B. Quality and type of data may make access more diff...

In the learning path "Get started with Microsoft data analytics," what do you learn about?Correct answer - the life and journey of a data analyst: skills tasks processes ...they go through in order to tell a story with data so trusted business decision can be made - how the suite of Power BI tools and services are used by a data analyst to tell a compelling story through reports and dashboards, and the need for true BI in the enterprise What types of data that are being generated each ...

Data Set Rectangular array of data with variables in columns and observations in rows Accounting involves __________ uncertainty Wrangling data is less ________ and more _____________ statistical; mechanical Advanced Filter allows you to do... mathematical operations on surviving observations When filtering in place, mathematical operations are conducted on ALL observations, even the ones that you filtered out. T/F T

WGU D204 Data Analytics Journey Exam Questions and Answers 100% pass Data scientists are able to find ______, _________, and _____ in unstructured data. - Answer- order, meaning, and value What is involved in the planning phase? - Answer- 1. Defining goals 2. Organizing resources 3. Coordinate people 4. Schedule project What is involved in the wrangling phase? - Answer- 5. Get data 6. Clean data 7. Explore data 8. Refine data What is involved in the Modeling phase? - Answer- 9. Creat...

Which of these is NOT a topic of interest for Discovery/Planning/Business Understanding? A. Project Scope B. Identify stakeholders and research questions/KPIs C. Build a data pipeline (ETL) D. Identify timeline, budget, and participants - C What is a potential problem to consider in the planning phase? A. Lack of clear focus on stakeholders, timeline, limitations, and budget B. Quality and type of data may make access more difficult C. Some cleaning techniques could dramatically change...

Data scientists are able to find ______, _________, and _____ in unstructured data. - Answer order, meaning, and value What is involved in the planning phase? - Answer 1. Defining goals 2. Organizing resources 3. Coordinate people 4. Schedule project What is involved in the wrangling phase? - Answer 5. Get data 6. Clean data 7. Explore data 8. Refine data What is involved in the Modeling phase? - Answer 9. Create model 10. Validate model 11. Evaluate model 12. Refine model What is ...

WGU D204 The Data Analytics Journey Exam Questions and Answers 100% Pass Analyses for Data Science: Descriptive: - Answer- Humans are good at finding patterns, but limited bandwidth - so we need to narrow the data. Look at the data. 1) Visualize the data - graphs, histograms, bell curve 2) Compute Univariate Descriptive Statistics: mean (average), mode (most common), median (splits into two equal halves). So ONE Value. 3) Measures of association: connection between the variables in your d...