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 10blocks ,10houses are selected at random , and then one resident of each of those houses is interviewed. This type of sampling method is

Answer 1

Stratified Sampling.

Answer 2

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.