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Table 8 Sample size for each stratum and the respective number of member retrieved

From: Investigating probabilistic sampling approaches for large-scale surveys in software engineering

Stratum #Distinct members Sample size Retrieved members
E1 114,827 1,031 2,563
E2  5,488  874 1,401
E3 11,633  955 1,444
E4  3,864  820 883
E5  56,400 1,021 1,358
E6  5,791  882 1,391
E7  17,234  981 1,016
E8  7,335  911 1,438