Statistics - (Interval|Delta) (Measurement)


An interval (measurement|variable) gives:


The following properties applied to interval measurement:

  • The interval between each unit are equals (temperature between 21 and 22 degree is the same than between 22 and 23 degree)
  • There is no absolute (true zero) when interval are scaled.


  • longitude and latitude
  • temperature (either Celsius or Fahrenheit degrees). A change of 1C is the same if the temperature goes from 0 C to 1 C, as it is when the temperature goes from 40C to 41C.
  • time,
  • distance,
  • area
  • volume

Documentation / Reference

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