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What is cardinal data?
Number that says how many of something there are
Number that says how many sets of something there are
Number that is a positive integer
None of the above
In an ordinal data set ...
The values / observations are in increasing order
The values / observations belonging to it can be ranked
The values / observations are in an arithmetic progression
Can a source be both primary and secondary?
The diary if Anne Frank is a ...
Primary Source
Secondary Source
What is a common pitfall of primary research
Biased methodology
Correlation does not imply causation
Not considering other related factors
All of the above