It is always important to work on an original data file, never work with a copy.
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Q2: A coding category must be exhaustive; that
Q3: Data cleaning is a process used to
Q4: ANOVA test is important for understanding distribution
Q5: In order to understand spread of data,
Q6: Data editing is often done by hand
Q8: The best way to deal with data
Q9: The purpose of coding is to ensure
Q10: Item non-response is term assigned to a
Q11: Data scientists and data analysts report that
Q12: Coding is an assignment of numerical scores
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