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Forest Ecosystems
Fig. 4 | Forest Ecosystems

Fig. 4

From: Comparison of estimators of variance for forest inventories with systematic sampling - results from artificial populations

Fig. 4

Execution of a systematic sampling design with a sampling interval of d = 6 (n = 1600) from a population composed of 57,600 units arranged in an array with 240 rows and 240 columns. Left: the n = 40 × 40 = 1600 sampling blocks. Right: A sampling block with indication of the position of the 4th and 12th of the K = 36 possible samples

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