Question

daphne wants to estimate the average number of pollutants in 500 waterways near industrial parks. she starts with the 15th one on the list and then every 16th waterway after that to estimate the average. what type of sampling is daphne using? select the correct answer below: convenience sampling, systematic sampling, cluster sampling, stratified sampling

Explanation:

Systematic sampling involves selecting elements from a population at regular intervals (a fixed sampling interval) after a random starting point. Here, Daphne starts at the 15th waterway and then selects every 16th waterway, which follows the pattern of systematic sampling. Convenience sampling uses easily accessible elements, cluster sampling divides into clusters and samples clusters, and stratified sampling divides into strata and samples from each stratum—none of these match Daphne's method.

Answer:

B. Systematic Sampling