Fig. 4

Cost-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 sampling design is more cost-effective than the x-axis sample design (DE = x-axis cost/panel cost). Downward pointing (negative) bars indicate the x-axis design is more cost-efficient than the named panel design (DE = panel design cost/x-axis cost). (Selection method and plot type acronyms are as defined in Table 2)