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A data set gathered over time. For one object, such as climate in Rolleston, Canterbury, the values of a variable (or several variables) are obtained at successive times. Usually there are equal intervals between the successive times.
Example
The maximum temperature, rainfall, maximum atmospheric pressure and maximum wind gust speed in Rolleston, recorded daily.
Note: At Level Eight a common approach to modelling time-series data considers the data to have four components; trend component, cyclical component, seasonal component and irregular component.
See: additive model (for time-series data)
Curriculum achievement objectives references
Statistical investigation: Levels 3, 4, (5), (6), (7), 8
