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The Wonderful world of dataCONTENT
Data has its own life cycle, and the work of data analysts often intersects with that cycle. In this part of the course, you’ll learn how the data life cycle and data analysts’ work both relate to your progress through this program. You’ll also be introduced to applications used in the data analysis process. Learning Objectives
Test your knowledge on the data life cycle1. Fill in the blank: During the _____ phase of the data life cycle, a business decides what kind of data it needs, how it will be managed, who will be responsible for it, and the optimal outcomes.
Correct: During the planning phase of the data life cycle, a business decides what kind of data it needs, how it will be managed, who will be responsible for it, and the optimal outcomes. 2. In the data life cycle, which phase involves gathering data from various sources and bringing it into the organization?
Correct: The capture phase involves gathering data from various sources and bringing it into the organization. 3. A data analyst finishes using a dataset, so they erase or shred the files in order to protect private information. This is called archiving.
Correct: Erasing or shredding files describes the destroy phase of the data life cycle. Archiving involves storing files in a place where it’s still available. 4. A dairy farmer decides to open an ice cream shop on her farm. After surveying the local community about people’s favorite flavors, she takes the data they provided and stores it in a secure hard drive so it can be maintained safely on her computer. This is part of which phase of the data life cycle?
Correct: This is the Manage phase of the data life cycle. It deals with how data is cared for, how and where it’s stored, the tools used to keep it safe and secure, and the actions taken to make sure it’s maintained properly. 5. After opening the ice cream shop on her farm, the same dairy farmer then surveys the local community about people’s favorite flavors. She uses the data she collected to determine that the top five flavors are strawberry, vanilla, chocolate, mint chip, and peanut butter. She feels confident in her decision to sell these flavors. This is part of which phase of the data life cycle?
Correct: This is part of the Analyze phase. This phase involves using data to make smart decisions and support business goals. Test your knowledge on the data analysis process1. The data analysis process phases are Ask, Prepare, Process, Analyze, Share, and Act. What do data analysts do during the Ask phase?
Correct: During the Ask phase, data analysts define the problem by looking at the current state and identifying how it’s different from the ideal state. 2. During the process phase of data analysis, a data analyst cleans data to ensure it’s complete and correct.
Correct: The process phase is all about getting the details right, so data analysts clean data by fixing typos, inconsistencies, and missing or inaccurate data. 3. During which phase of data analysis would a data analyst use spreadsheets or query languages to transform data in order to draw conclusions?
Correct: The Analyze phase involves using data analytics tools such as spreadsheets and query languages to transform data in order to draw conclusions and make informed decisions. 4. In which data analysis phase would a data analyst use visuals such as charts or graphs to simplify complex data for better understanding?
Correct: The Share phase involves how results are interpreted and shared with others, often through data visualization. 5. A data analyst shares insights from their analysis during a formal presentation to stakeholders. In a slideshow, they make a data-driven recommendation for how to solve a business problem. What phase of the data analysis process would come next?
Correct: In this scenario, the data analyst has just shared insights. So, the next phase would be to act and put those insights to work in order to solve the business problem. 1. Based on what you have learned in this course, spreadsheets are digital worksheets that enable data analysts to do which of the following tasks? Select all that apply.
Correct: Spreadsheets enable data analysts to store, organize, sort, and filter data. This helps them see patterns, group information, and easily find the information they need. 2. Fill in the blank: A set of instructions that performs a specific calculation using spreadsheet data is called _____.
Correct: A set of instructions that performs a specific calculation using spreadsheet data is called a formula. 3. A database is a collection of data stored in a computer system.
Correct: A database is a collection of data stored in a computer system. 4. In data analytics, SQL is an acronym meaning _____ query language.
Correct: SQL stands for structured query language. It enables data analysts to communicate with a database. 5. What is the term for the graphical representation of data?
Correct: Data visualization is the graphical representation of data. *Weekly Challenge 3*1. Fill in the blank: A business decides what kind of data it needs, how the data will be managed, and who will be responsible for it during the _____ stage of the data life cycle.
Correct: A business decides what kind of data it needs, how the data will be managed, and who will be responsible for it during the Plan stage of the data life cycle. 2. The destroy stage of the data life cycle might involve which of the following actions? Select all that apply.
Correct: The destroy stage of the data life cycle might involve shredding paper files or using data-erasure software. 3. During the capture stage of the data life cycle, a data analyst may use spreadsheets to aggregate data.
Correct: Using spreadsheets to aggregate data would happen during the Analyze stage. 4. Fill in the blank: The data life cycle has six stages, whereas data analysis has six _____.
Correct: Although both the data life cycle and the data analysis process have six elements, the life cycle involves stages and analysis involves process steps. 5. What actions might a data analytics team take in the Act phase of the data analysis process? Select all that apply.
Correct: During the Act phase, a data analytics team might validate insights, finalize a strategy, and put a plan into action. 6. Fill in the blank: A formula is a set of instructions used to perform a specified calculation; whereas a function is _____.
Correct: A formula is a set of instructions used to perform a specified calculation; a function is a preset command that automatically performs a specified process. 7. Fill in the blank: To request, retrieve, and update information in a database, data analysts use a ____.
Correct: A query enables data analysts to request, retrieve, and update information from a database. 8. Fill in the blank: Structured query language (SQL) enables data analysts to _____ the information in a database. Select all that apply.
Correct: A query enables data analysts to request, retrieve, and update information from a database.  From the Quiztudy TeamHi, Quiztudy is pleased to assist you with any study guide, certificate, or assessment test. More study guides will be published as we grow. Subscribe to our siteGet new content delivered directly to your inbox. What is queries in data analysis?Query analysis is a process used in databases which make use of SQL in order to determine how to further optimize queries for performance. Query analysis is an important aspect of query processing as it helps improve overall performance of query processing, which will speed up many database functions and aspects.
How is SQL used by data analysts?Though SQL is commonly used by engineers in software development, it's also popular with data analysts for a few reasons: It's semantically easy to understand and learn. Because it can be used to access large amounts of data directly where it's stored, analysts don't have to copy data into other applications.
What questions do data analysts ask?General data analyst interview questions. Tell me about yourself. What they're really asking: What makes you the right fit for this job? ... . What do data analysts do? ... . What was your most successful/most challenging data analysis project? ... . What's the largest data set you've worked with?. Which component is used by the data analyst to create queries?SQL consoles
Our data analyst tools list wouldn't be complete without SQL consoles. Essentially, SQL is a programming language that is used to manage/query data held in relational databases, particularly effective in handling structured data as a database tool for analysts.
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Question 7 data analysts use queries to request, retrieve, and update information within a database.
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