The Polson Pole and Fence Company recently did a quality check on the length of fence posts. To do this, each of the 400 posts in inventory was numbered. Numbers from 1 to 400 were placed in a bowl. Twenty numbers were selected from the bowl without looking. These 20 poles were the ones selected for the study. This type of sampling is called:
A) cluster sampling.
B) simple random sampling.
C) nonstatistical.
D) convenience sampling.

Question

Quizplus · Accepted Answer

This is an example of simple random sampling because every item (in this case, fence post) had an equal chance of being selected. Each of the 400 posts was numbered, and numbers were drawn randomly, ensuring that every post had an equal opportunity to be chosen for the study.

The Polson Pole and Fence Company Recently Did a Quality