Identify the sampling techniques used, and discuss potential sources of bias (if

Question

Identify the sampling techniques used, and discuss potential sources of bias (if any). Explain. Corn is planted on a 54-acre field. The field is divided into one-acre subplots. A sample is taken from each subplot to estimate the harvest. What type of sampling is used? A. Cluster sampling is used, since the field is divided into subplots, a number of subplots are selected, and every corn plant in the selected subplots is B. Simple random sampling is used, since each sample of corn plants of the same amount has the same chance of being selected. C. Stratified sampling is used, since the field is divided into subplots and a random sample is taken from each subplot. D. Convenience sampling is used, since the corn plants closest to the barn are sampled. What potential sources of bias are present, if any? Select all that apply. A. It is possible that, due to sampling error, the sample will not be representative. B. The sample only consists of the corn plants that are easiest to reach. This may not be representative of the entire population. Certain subplots may have more or fewer corn plants than others. Samples from these subplots may bias the overall sample. D. There are no potential sources of bias.

Explanation / Answer

(first part) right choice is B

since plot are divided uniformly into subplot (of one acre), so we can go for simple random sampling

(second part)right choice is C

here there is chance of some of sub-plot may have un-even distribution of plant. so this may lead to bias.

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