Question

To conduct a survey about the type of phone service most people in Greenville prefer, 10 different blocks in the neighborhood are chosen. On these 10 blocks, 10 houses are selected at random, and then one resident of each of those houses is interviewed. This type of sampling method is

Answer 1

The sampling method is stratified sampling.

Explanation:

Stratified sampling is a method where the population is divided into groups and then from within each group a probable sample is selected.

Here, the groups the blocks. Then from each block, 10 houses are randomly selected and 1 person interviewed(probability sample).

Therefore, it is a stratified sampling.

Answer 2

This method is called cluster sampling. I hope it will work.