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AN 300 Module 2 A+ Questions and Answers
AN 300 Module 2 A+ Questions and Answers
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AN 300 Module 2 A+ Questions andAnswers
Data Wrangling - ANS-process of retrieving, cleansing, integrating, transforming, and
enriching data to support subsequent data analysis.
Objectives include improving data quality, reducing the time and effort required to
perform analytics, and helping reveal the true intelligence in the data.
data management - ANS-Process an organization uses to process, organize, store,
manipulate, and distribute data.
relational database - ANS-one or more logically related data files often called tables or
relations and each data file is a two-dimensional grid that consists of rows and columns.
Entity Relationship Diagram (ERD) - ANS-A diagram that depicts an entity relationship
model's entities, attributes, and relations.
entity - ANS-generalized category to represent persons, places, things, or events.
relationships between entities - ANS-one to one (1:1)
one to many (1:M)
Many to many (M:N)
Structured Query Language (SQL) - ANS-relatively simple and composed of three key
words
Select- the name of attributes we want to receive.
From- the tables from which to retrieve the data.
Where- data based on selection criteria.
JMP - ANS-Developed by John Sall at SAS (Statistical Analysis Systems) in 1989 to
"transform a world of data into intelligence".
• JMP Pro brings interactive data transformation functionalities to the desktop on one
platform:
- Create/Import data
- Cleanse/Pre-process data
- Explore/Visualize data
, - Analyze data
- Communicate/share findings
JMP pro - ANS-Use your personal device.
- Install your personal copy of the latest version of JMP Pro
- Access JMP Pro locally
- Save your work locally
- Update your license annually
• Via Virtual Den.
- Install "Citrix Receiver"
- Access JMP Pro remotely
- Save your work to your device
tableau - ANS--Developed by three researchers (Christian Chabot, Pat Hanrahan, and
Chris Stolte) at Stanford University in 2003 to "make data understandable to ordinary
people".
• Tableau Desktop brings interactive visual analytics to the desktop:
- Connect to data
- Explore data
- Put data on the map
- Communicate/share findings
Data Transformation process - ANS-1. Data acquisition
2. Datapre-processing
3. Dataquery
4. Datareporting
5. Datavisualization
6. Dataanalysis
- Descriptive analytics
- Predictive analytics
- Prescriptive analytics
Data Hierarchy - ANS-Data on an object of interest, (e.g., customer) is structured
hierarchically as:
- Data field/column/variable (e.g., a customer's name)
- Data record/row/observation (e.g., name, address, phone, gender, etc.
about a customer)
- Data file/table/set (e.g., a customer file)
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