WGU D467 EXPLORING DATA EXAM 2 || ACCURATE
AND FREQUENTLY TESTED QUESTIONS AND 100%
CORRECT ANSWERS WITH RATIONALES|| LATEST
AND COMPLETE UPDATE WITH EXPERT VERIFIED
SOLUTIONS|| SURE PASS!!
Data you collect yourself - ANSWER:First Party Data
Data is collected directly by another group then sold - ANSWER:Second Party
Data
Data sold by a provider that did not collect the data themselves - ANSWER:Third
Party Data
Select The Right Type of Data
Determine the Time Frame
Collect New Data
Use Existing Data - ANSWER:Data Collection Considerations
Primary Vs Secondary, Internal Vs. External, Continuous Vs. Discrete, Qualitative
Vs. Quantitative, Nominal Vs Ordinal, Structured Vs. Unstructured -
ANSWER:Data Formats
Organized in a certain format such as rows and columns - ANSWER:Structured
Data
Not Organized in any easy way to identify - ANSWER:Unstructured Data
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Process of creating diagrams that visually represents how data is organized and
structured. These visual representations are called data models - ANSWER:Data
Modeling
Conceptual Data Modeling, Logical Data Modeling, Physical Data Modeling -
ANSWER:Three most common types of data modeling
A specific Kind of data attribute that tells what kind of value the data is -
ANSWER:Data Type
Can be a number, text/string, or a Boolean - ANSWER:Data Type in a
Spreadsheet
Uses Multiple conditions such as: boolean operators (AND, OR, NOT) -
ANSWER:Boolean Logic
Process of changing the data's format, structure, or values - ANSWER:Data
transformation
Organization, Compatibility, Migration, Merging, Enhancement, or Comparison -
ANSWER:Goals of Data Transformation
Can systematically skew results in a certain direction making them unreliable. As
an analyst, think about bias and fairness from the moment you start collecting data
to time you present your conclusion. - ANSWER:Biased Data
When a sample is not representative of the population as a whole. Unbiased
sampling results in a sample that is representative of the population being
measured. - ANSWER:Sampling Bias