To conduct a systematic random sampling out of the population, one should follow the following steps: 1. Create a list and assign numbers on every element in the population - Say a we assign cases 1 to 12,000
2. Decide the sample desired sample size - In our case, the sample size required is 600 cases
3. Select sampling interval - Simply divide the population with the sample size - 12,000/600 =20 - Therefore, our sampling interval is 20. Meaning on every 20th element on the population we get to draw our pick until the desired sample size is accomplished.