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Teach me ordinal or scaled (central tendency)

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ordinal or scaled (central tendency)

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Teach me ordinal or scaled (central tendency)

  1. 1. Ordinal data is rank ordered data: 1st, 2nd, 3rd, . . place or percentiles: 7th %, 23rd %, 99th % where there are no equal intervals between units. Scaled data is data with equal interval or exchangeable units (1 to 2 is the same interval as 5 to 6) such as speed (mph), height (inches or cm), or weight (grams or pounds) Important Note: When the data is ORDINAL you will always use MEDIAN for central tendency and the INTER-QUARTILE RANGE for spread. Important Note: When the data is SCALED you will always use MEAN for central tendency and the STANDARD DEVIATION for spread.

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