systematic sampling

• what is systemic sampling?

  samples are selected in a regular manner, for example, every ten metres
• what are the advantages of systematic sampling?

  simple to carry out as it is a fixed pattern

  removes bias as samples are clearly separated

  evenly distributes samples
• what are the disadvantages of systematic sampling?

  patterns can be predicted, which can cause bias

  unequal selection due to the numbering system, individuals can be easily overlooked