A time series is
A) the length of a business cycle.
B) a macroeconomic aggregate that does not lead or lag the business cycle.
C) data that is subject to revision.
D) a sequence of dated measurements.

Question

Quizplus · Accepted Answer

A time series is a set of data points measured over a period of time and indexed in chronological order. It can be any type of measurement, such as stock prices, GDP, or temperature, but the key characteristic is that it is measured at regular intervals over time.  Choice A refers to the length of a specific phase of the business cycle, not a time series. Choice B incorrectly suggests that time series data is not related to the business cycle. Choice C is true but not a defining characteristic of a time series.

A Time Series Is