# Statistics - (Interval|Delta) (Measurement)

An interval (measurement|variable) gives:

## Properties

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.

## Example

• 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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