We collected data to test the relative efficacy of different targeting methods in the 2011 PKH expansion. From the 2,500 expansion villages, a sample of 400 was chosen. We drew villages from three provinces (Lampung, South Sumatra, and Central Java), stratified to be 30 percent urban. Within each village, we randomly selected one hamlet (neighborhood), with each having an elected or appointed administrative hamlet head.

1.What is the level of randomization in the experiment?

1.What covariate is used for stratification of the random assignment?