When looking at mode as a measure of central tendency, the data indicates that Independent is the ...

When looking at mode as a measure of central tendency, the data
  indicates that Independent is the preference for registered voters. How
  would you interpret this?
 
  A. Independent is the mathematical average
  B. Independent is the middle score
  C. Independent is the statistical average
  D. Independent is the most frequent score

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Income and happiness are two variables that appear to have
  association. If we have the figures for those two variables how can
  the association be tested?
 
  A. Open-ended
  B. Correlation
  C. Descriptive
  D. Inferential

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Task such as selecting a field site; participant observation; and focus
  groups would likely represent what type of research?
 
  A. qualitative
  B. quantitative
  C. deductive
  D. empirical