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Table 3 Correlation and the improvement in the RMSE of V (%) due to the use of ALS auxiliary information in PPS sampling

From: Inventory of aspen trees in spruce dominated stands in conservation area

Statistical variable Stand
1 2 3
Correlation 0.35 0.04 0.33
Improvement in the RMSE of V (%) 10.6 –7.0 3.2