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Fig. 7 | Forest Ecosystems

Fig. 7

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

Fig. 7

Variance ratios (\( \frac{\mathrm{mean}\left({\hat{V}}_{EST}\right)}{V_{DES}}, EST=\left\{ SRS, MAT, SDR, RIP, DOR\right\} \)) in simulated systematic sampling with sample size n = 400, 576, 900, and 1600 (y-axis). A dot represents a ratio of the mean over K samples to the design-based variance in one realization of a superpopulation. The larger red dot is the mean ratio in 30 realizations. Dots above 1.6 have been clipped (34 values > 1.6 from SRS and 6 values > 1.6 from RIP)

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