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sampling theory (5) |
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Stichprobenfehler (3) |
Stichprobentheorie (5) |
survey research (3) |
sample (5) |
sampling error (3) |
sampling theory (5) |
Stichprobe (5) |
Stichprobenfehler (3) |
Stichprobentheorie (5) |
survey research (3) |