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What kind of central tendency measure is applied to nominal scale data ?

  • A.Mean
  • B.Mode
  • C.Median
  • D.Harmonic mean

Answer: B

For nominal data the measure is the mode.

Nominal data are categories with no order, such as religion or blood group. The only meaningful average is the most frequent category, the mode.

The median requires the data to be ranked, so it needs at least ordinal data. The arithmetic and harmonic means require numerical (interval or ratio) values that can be added or inverted, which nominal categories are not.

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