WGU D467 Exploring Data UPDATED
ACTUAL Exam Questions and CORRECT
Answers
1. Select the right data type 2. Determine the time frame for data collection 3. How the data will
be collected 4. How much data to collect 5. Choose data sources 6. Decide what data to use -
CORRECT ANSWER - Data collection considerations
All possible data values in a certain dataset - CORRECT ANSWER - Population
A part of the population that is representative of the population - CORRECT ANSWER -
Sample
Data collected by an individual or group using their own resources - CORRECT
ANSWER - First-party data
Data collected by a group directly from its audience and then sold - CORRECT
ANSWER - Second-party data
Data collected from outside sources who did not collect it directly - CORRECT
ANSWER - Third-party data
Collected by a researcher from first-hand sources - CORRECT ANSWER - Internal data
(Primary data)
Gathered by other people or from other research - CORRECT ANSWER - External data
(Secondary data)
Can be measured and counted using numbers (quantity, amount, range) - CORRECT
ANSWER - Quantitative data
,Cannot be counted, measured or easily expressed in numbers (names, categories, descriptions) -
CORRECT ANSWER - Qualitative data
Data that is counted and has a limited number of values - CORRECT ANSWER - Discrete
data
Data that is measured and can have any numeric value - CORRECT ANSWER -
Continuous data
A type of qualitative data that is categorized without a set order - CORRECT ANSWER -
Nominal data
A type of qualitative data with a set order or scale - CORRECT ANSWER - Ordinal data
Data organized in a certain format such as rows and columns - CORRECT ANSWER -
Structured data
Data that is not organized in an easily identifiable manner - CORRECT ANSWER -
Unstructured data
A model that is used for organizing data elements and how they relate to one another -
CORRECT ANSWER - Data model
Pieces of information, such as people's names, account numbers, and addresses - CORRECT
ANSWER - Data elements
The process of creating diagrams that visually represent how data is organized and structured -
CORRECT ANSWER - Data modeling
, 1. Conceptual modeling 2. Logical data modeling 3. Physical data modeling - CORRECT
ANSWER - Levels of data modeling
Defines all entities and attributes used. - CORRECT ANSWER - Physical data model
Visual way to understand the relationship between entities in the data model. - CORRECT
ANSWER - Entity Relationship Diagram (ERD)
Detailed diagrams that describe the structure of a system by showing the system's entities,
attributes, operations, and their relationships. - CORRECT ANSWER - Unified Modeling
Language (UML)
A specific kind of data attribute that tells what kind of value that is. - CORRECT
ANSWER - Data type
A sequence of characters and punctuation that contains textual information. - CORRECT
ANSWER - Text or string
Data type with only two possible values: true or false. - CORRECT ANSWER - Boolean
A symbol that names the operation or calculation to be performed. - CORRECT
ANSWER - Operator
Lets you stack both of your conditions. - CORRECT ANSWER - AND operator
Lets you move forward if either one of your two conditions is met. - CORRECT
ANSWER - OR operator
Lets you filter by subtracting specific conditions from the results. - CORRECT
ANSWER - NOT operator
ACTUAL Exam Questions and CORRECT
Answers
1. Select the right data type 2. Determine the time frame for data collection 3. How the data will
be collected 4. How much data to collect 5. Choose data sources 6. Decide what data to use -
CORRECT ANSWER - Data collection considerations
All possible data values in a certain dataset - CORRECT ANSWER - Population
A part of the population that is representative of the population - CORRECT ANSWER -
Sample
Data collected by an individual or group using their own resources - CORRECT
ANSWER - First-party data
Data collected by a group directly from its audience and then sold - CORRECT
ANSWER - Second-party data
Data collected from outside sources who did not collect it directly - CORRECT
ANSWER - Third-party data
Collected by a researcher from first-hand sources - CORRECT ANSWER - Internal data
(Primary data)
Gathered by other people or from other research - CORRECT ANSWER - External data
(Secondary data)
Can be measured and counted using numbers (quantity, amount, range) - CORRECT
ANSWER - Quantitative data
,Cannot be counted, measured or easily expressed in numbers (names, categories, descriptions) -
CORRECT ANSWER - Qualitative data
Data that is counted and has a limited number of values - CORRECT ANSWER - Discrete
data
Data that is measured and can have any numeric value - CORRECT ANSWER -
Continuous data
A type of qualitative data that is categorized without a set order - CORRECT ANSWER -
Nominal data
A type of qualitative data with a set order or scale - CORRECT ANSWER - Ordinal data
Data organized in a certain format such as rows and columns - CORRECT ANSWER -
Structured data
Data that is not organized in an easily identifiable manner - CORRECT ANSWER -
Unstructured data
A model that is used for organizing data elements and how they relate to one another -
CORRECT ANSWER - Data model
Pieces of information, such as people's names, account numbers, and addresses - CORRECT
ANSWER - Data elements
The process of creating diagrams that visually represent how data is organized and structured -
CORRECT ANSWER - Data modeling
, 1. Conceptual modeling 2. Logical data modeling 3. Physical data modeling - CORRECT
ANSWER - Levels of data modeling
Defines all entities and attributes used. - CORRECT ANSWER - Physical data model
Visual way to understand the relationship between entities in the data model. - CORRECT
ANSWER - Entity Relationship Diagram (ERD)
Detailed diagrams that describe the structure of a system by showing the system's entities,
attributes, operations, and their relationships. - CORRECT ANSWER - Unified Modeling
Language (UML)
A specific kind of data attribute that tells what kind of value that is. - CORRECT
ANSWER - Data type
A sequence of characters and punctuation that contains textual information. - CORRECT
ANSWER - Text or string
Data type with only two possible values: true or false. - CORRECT ANSWER - Boolean
A symbol that names the operation or calculation to be performed. - CORRECT
ANSWER - Operator
Lets you stack both of your conditions. - CORRECT ANSWER - AND operator
Lets you move forward if either one of your two conditions is met. - CORRECT
ANSWER - OR operator
Lets you filter by subtracting specific conditions from the results. - CORRECT
ANSWER - NOT operator
