HTTP_Request2_Exception Unable to connect to tcp://think-ws.ca.edps.org:85. Error: php_network_getaddresses: getaddrinfo failed: Name or service not known Optimization of a survey using spatially balanced sampling: a single-year application of clam monitoring in the Arcachon Bay (SW France) | Aquatic Living Resources
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Table 1

Estimated optimal sample size and estimated survey costs for 5%, 10% and 20% level of precision with StRS and GRTS. Optimal sample size is computed for each stratum separately, values for the two survey designs are then compared with paired Wilcoxon test.

Precision Wilcoxon tests Overall sample sizes Survey costs (×1000€)
  Test statistic (V) P-value Actually = 525 Actually = 53
  StRS GRTS StRS GRTS
5% 0 <0.001 955 481 76 38
10% 0 <0.001 493 281 39 22
20% 0 <0.001 248 167 20 13

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