Systematic Sample

This type of sample is formed by taking members of the population at regular intervals.

For example, by selecting every \(5^{th}\) or every \(10^{th}\) or every \(20^{th}\) member of the population, depending on the population number and sample size.

Use the slider to explore worked examples.

Worked Example

There are \(12\) teachers in this small primary school. A sample of size \(3\) is to be selected using systematic sampling.
Worked Example

In reality with only \(12\) teachers to sample, it would be easier to survey the complete population; we call this a CENSUS.
As an example though, we will use the same data to obtain a random sample of size 3.
Find a random sample of size 3 for this population.

Data Collection

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