A researcher is interested in the trunk circumference of trees at a particular logging site. The trees are planted in perfect rows. So, the researcher determines that she needs to measure every 12^th tree to obtain her sample. She uses a random number generator to determine that she should start at the fifth tree and sample every 12^th tree after that. This is an example of what type of sampling? A) simple random sampling B) stratified random sampling C) systematic random sampling D) purposive sampling

Question

Quizplus · Accepted Answer

The sampling method described is systematic random sampling, where the researcher selects every 12th tree after starting at a random point (in this case, the fifth tree). This method is systematic because it follows a specific pattern, and it is random because the starting point is chosen randomly.

A Researcher Is Interested in the Trunk Circumference of Trees