Figure 3.5: Nonresponse has been increasingly steadily, even in high-quality expensive surveys (National Research Council 2013; B. D. Meyer, Mok, and Sullivan 2015).
Малюнак 3.5: ўлонне было больш стабільна, нават у высакаякасных дарагіх абследаванняў (National Research Council 2013; BD Meyer, Mok, and Sullivan 2015) .