The indicator of population density has tight relationship with country and regional economical indicators. If we use population density as the main basis of sampling frame design, the quality of sample survey will be...The indicator of population density has tight relationship with country and regional economical indicators. If we use population density as the main basis of sampling frame design, the quality of sample survey will be heightened.展开更多
文摘The indicator of population density has tight relationship with country and regional economical indicators. If we use population density as the main basis of sampling frame design, the quality of sample survey will be heightened.