Latest Nursing - MATH 399N Week 3 Quiz with Answers 1. Identify the sampling techniques used, and discuss potential sources of bias (if any). Explain. After a wildfire, a disaster area is divided into 250 equal grids. Twenty of the grids are selected, and every occupied household in the grid is interviewed to help focus relief efforts on what residents require the most. What type of sampling is used? o A. Stratified sampling is used, since the disaster area is divded into grids, and a random sam...