Types of malware that can damage computers
Small files stored on computers that contain information about users
Programs that enable users to access websites
Pieces of code that store information about a website - ANSWER Small files stored on
computers that contain information about users
Fill in the blank: For data analytics projects, _____ data is typically preferred because users
know it originated within the organization.
A grocery store chain purchases customer data from a credit card company. The grocer uses this
data to identify its most loyal customers and offer them special promotions and discounts. What
type of data is being used in this scenario?
In data analytics, what term refers to all possible data values in a dataset?
Source
Representation
Population
Sample - ANSWER Population
,An entertainment website displays a star rating for a movie based on user reviews. Users can
select from one to five whole stars to rate the movie. The star rating is an example of what type
of data? Select all that apply.
What are the key characteristics of unstructured data? Select all that apply.
Fits neatly into rows and columns
Unorganized
May have an internal structure
Clearly identifiable construction - ANSWER Unorganized
May have an internal structure
Fill in the blank: A data model is used to organize _____ and how they relate to one another.
data visualizations
database structures
data elements
spreadsheet fields - ANSWER data elements
, When discussing structured databases, data analysts refer to the data contained in a row as a
record. How do they refer to the data contained in a column?
Field
Subject
Character
Point - ANSWER Field
Fill in the blank: A data type is a specific kind of data _____ that tells what kind of value the
data is.
attribute
frame
model
point - ANSWER attribute
What are the key characteristics of a text, or string, data type? Select all that apply.
Contains textual information
Only two possible values
Sequence of characters and punctuation
Has numerical percentages - ANSWER Contains textual information
Sequence of characters and punctuation
In a data table, where are fields contained?
Rows
Columns
Favorites
Charts - ANSWER Columns
When using long data, each subject has data in multiple rows. This is because each row
represents what?
Data in different formats
True or false data points
One observation per subject
Multiple values - ANSWER One observation per subject
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