Fig. 3

Sample size–based design effect comparisons by five sample selection methods and four plot types. Sample size calculations were based on a desired standard error of 5%. Upward pointing (positive) bars indicate that the named panel sample design is more effective than the x-axis sample design (DE = x-axis sample size/panel sample size). Downward pointing (negative) bars indicate the x-axis design is more efficient than the named panel design (DE = panel design sample size /x-axis sample size). (Selection method and plot type acronyms are as defined in Table 2)