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Table 3 Allocation of the sample units in the layers. Inverse-proportional stratified sampling

From: Commoning of territorial heritage and tools of participated sustainability for the production and enhancement of agro-environmental public goods

Strata Municipalities Resident population Wh nh N/Nh wh nh1
0–5 12 28.356 0.17 46 5.89 0.29 77
5–10 3 18.360 0.11 30 9.09 0.44 119
10–30 4 57.106 0.34 92 2.92 0.14 38
30–100 1 63.153 0.38 102 2.64 0.13 35
  20 166.975    20.55   269
  1. Data on the total resident population refer to January 01, 2017; extrapolation data of June 15, 2017 by Istat —municipal resident population by sex year of birth and marital status. Source: our processing on Istat data
  2. Wh weight of the population residing in the center amplitude class with respect to the provincial population, nh number of interviews to be performed in the center amplitude class, N resident provincial population, Nh total resident population in the center amplitude class, wh weight of the units to be sampled in the center amplitude class with respect to the total sample, nh1 number of interviews to be performed in the center amplitude class