Identify the sampling techniques used and discuss potential sources of bias (if any). Explain: 53-acre field. The field is divided into one-acre subplots and a sample is taken from each subplot. Potatoes are planted on each subplot to estimate the harvest.
What type of sampling is used?
- Stratified sampling is used since the field is divided into subplots and a random sample is taken from each subplot.
- Simple random sampling is used, since each sample of potato plants of the same amount has the same chance of being selected.
- Convenience sampling is used since the potato plants closest to the barn are sampled.
- Cluster sampling is used since the field is divided into subplots, a number of subplots are selected, and every potato plant in the selected subplots is sampled.
What potential sources of bias are present, if any? Select all that apply:
- The sample only consists of the potato plants that are easiest to reach. This may not be representative of the entire population.
- Certain subplots may have more or fewer potato plants than others. Samples from these subplots may bias the overall sample.
- It is possible that, due to sampling error, the sample will not be representative.
- There are no potential sources of bias.