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OVER 98% PASS RATE FOR THE NCS, PCS, OCS, AND GCS EXAMS › forums › NCS Advantage › Case study 8

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    • February 10, 2025 at 11:13 pm #490294
      Pamela Isita
      Participant

      Hello,

      I had a question about case study 8, question 10 which asks about what central tendency measurement would be best to measure the average.

      I answered mean, however the correct answer was median.

      Can you please explain the reasoning behind the correct answer.

      Thank you.

    • February 11, 2025 at 1:58 pm #490302
      Chrissy Durrough Lugge
      Keymaster

      This question is referring to an ordinal data set (green, yellow, red). Median is the measurement of central tendency for ordinal data.

      There are no values to sum and divide to calculate mean, as there is for interval or ratio data. Median is also preferred for interval or ratio data when the values are skewed because median is less affected by outliers.

    • February 15, 2025 at 11:09 am #490311
      Pamela Isita
      Participant

      Thank you for the explanation.

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