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chapter 3 MCQ Chapter 3 Data Analytics Exam 1 KIỂM S
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Big Data is often described by the four V's, or Volume, Velocity, Veracity, Variety
Which of these terms is defined as being a central D. Data Dictionary
repository of descriptions for all of the data attributes of
the data set?
A. Data warehouse
B. Data Analytics
C. Big Data
D. Data Dictionary
The IMPACT cycle includes all except the following steps: A. Visualize the data
A. Visualize the data
B. Master the Data
C. Perform test plan
D. Track outcomes
The IMPACT cycle specifically includes all except the D. Data preparation
following steps:
A. Communicate insights
B. Address and refine Results
C. Perform test plan
D. Data preparation
According to the text, as the credit score increases, there A lesser
is ________________ chance of a loan getting rejected by the
bank
Mastering the data can also be described via the ETL Extract, transform and load data
process. The ETL process stands for:
, The metadata (data describing data) that describes each B. Data dictionary
attribute in a database is which of the following?
A. Composite primary key
B. Data dictionary
C. Descriptive attributes
D. Flat file
Auditing financial statements, and its desire to look for B. Diagonostic analytics
errors, anomalies, and possible fraud is most consistent
with which type of analytics?
A. Descriptive analytics
B. Diagonostic analytics
C. Predictive analytics
D. Prescriptive analytics
These data are organized and reside in a fixed field with a C. Structured data
record or a file. Such data are generally contained in a
relational database or spreadsheet and are readily
searchable by search algorithms. The term matching
these definitions is:
A. Training data
B. Unstructured data
C. Structured data
D. Test data
Which of the following is not a typical example of B. SAT score
nominal data?
A. Gender
B. SAT score
C. Hair color
D. Ethnic group
Line charts are not recommended for what type of data? B. Qualitative data
A. Normalized Data
B. Qualitative data
C. Continuous data
D. Trend lines
Identify which ETL tasks would be considered Validating A. Cleaning
the data, and which would be considered Cleaning the B. Validating
data C. Validating
A. Remove headings or subtotals D. Cleaning
B. Compare descriptive statistics for numeric fields
C. Compare string limits for text fields
D. Format negative numbers
Scatter plots are more meaningful if they include a Trend Line
_____________