a. "Blood types": Variable? or Data? b. "Blood types": Numerical? or Categorical? c. "Blood types": Discrete?, Continuous (Interval? or Ratio?), Ordinal? or Nominal? d. "Blood types": Quantitative? or "Qualitative"? e. "Frequency": Variable? or Data? f. "Frequency": Numerical? or Categorical? g. "Frequency": Discrete?, Continuous (Interval or Ratio)?, Ordinal? or Nominal? h. "Frequency": Quantitative? or "Qualitative"? i. Source: "Primary"? or "Secondary"?

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