Chapter 4 · Sampling · Slide 150/274
Correction for a small population: ± 10 %
Calculations show approximate values for a 95% confidence level
4.4 · Sample Size
Correction in Practice
Correction for a small population: ± 10 %
ncorr=n · Nn + N − 1
Computationally required
n = (1 / 0.1)² = 10²
100
… with only N = 100 elements in the population.
→
Corrected
ncorr = (100 · 100) / (100 + 100 − 1)
= 10.000 / 199
= 10.000 / 199
≈ 50
Calculations show approximate values for a 95% confidence level
QUESTIONSTAR · Dr. Paul Marx
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