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Table 11 Correlation between the distributions showed in Table 9 and 10

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

Stratum Correlation 95 % (inferior) 95 % (superior)
E1 0.8022 0.3487 0.9513
E2 0.9957 0.9814 0.999
E3 0.7857 0.309 0.9469
E4 0.9595 0.8333 0.9906
E5 0.7611 0.2524 0.9402
E6 0.9786 0.9092 0.9951
E7 0.943 0.7714 0.9868
E8 0.9843 0.9329 0.9964