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

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.