**Difference Random Sample versus Time Series**
Jaap de Jonge, Management Consultant, Netherlands

As far as I understand the basic difference is that:

- A time series is a sequence of data points, measured typically at successive time instants (per second, minute, hour, day, week, month, year). So

**time series data have a natural temporal ordering**.

- A

**random sample has no natural ordering** of the observations. It is a collection of data without any order, be it in time or any other. It is randomly collected data.