Question

Idenlity the sampling techniques uned, and discuss potential sources of bias if anyl. Explain After a food, a dsaster aea is dvided into 150 equal grids. Thiety of the grids are selected, and every occupied household in the grid is interviewed to help focus nelief efforts on what residents require the most What type of sampling is used? O A. Stralifled sampling in used, since the dissster area is divded into grids, and a random sample is taken from each grd O B. Strathed samtinig m used, since the disaster area s divided no grids、ard some of tose grids are selected and everyone in those gots ⓔС· Cluster uanplngts used, s te dsaster area is divded nto grids, ard a rardom sample is taken from each gd rtonowod D ader sarping used, s noe tw dsaster arna is divided into grids, and so e of those gids are selected and mer ore n toe grids is intervewed What potential sources of bias are present, if any? Solect all that apply □ A Cer an gnds ma.de been much more severely damaged than others. Severely damaged grids mesy have fewer ocared hoseholds. B. Certain grids may have been much more sevoroly damaged than others. The grids that are selected may not be representative in terms of damage D C. The sample only consists of grids that are sasy to get. These grids may not be representative of the population D D. Thare are no potenial sources of bias

Answer 1