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Claimed Confidence Level: 95%True Confidence Levels Are Reported To Within 0.7% Accuracy
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35,000 simulations were run for each scenario to estimate the true confidence level. In each scenario (e.g. 1-sample, n=5, ChiSq(1)), the four confidence interval methods were applied across the same simulated data. For the bootstrap methods, 10,000 bootstrap samples were used.
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The 2*SE bootstrap method is only currently available for a couple of cases and so far has performed about on par with that of the percentile bootstrap.
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>93% Capture91-93% Capture88-90.9% Capture84-87.9% Capture80-83.9% Capture75-79.9% Capture<75% Capture
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Population(s) Distribution, i.e. the Truth
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1-sample, n=5ChiSq(0.5), µ=0.5ChiSq(1), µ = 1ChiSq(3), µ = 3ChiSq(5), µ = 5N(0,1), µ = 0
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T Confidence Interval73.72%82.71%90.38%92.19%94.97%
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T Conf. Int. using Bootstrap SE71.78%80.71%88.23%90.28%93.12%
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Z Confidence Interval67.65%75.73%83.09%84.83%87.67%
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Bootstrap Conf. Int via 2*SE65.89%73.93%80.24%82.08%85.29%
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Bootstrap Conf. Int via Percentile66.72%73.8%80.34%81.43%83.64%
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1-sample, n=10ChiSq(0.5), µ=0.5ChiSq(1), µ = 1ChiSq(3), µ = 3ChiSq(5), µ = 5N(0,1), µ = 0
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T Confidence Interval79.73%86.22%91.5%92.89%95.03%
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T Conf. Int. using Bootstrap SE78.72%85.31%90.53%91.94%94.04%
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Z Confidence Interval76.84%83.3%88.5%89.72%91.96%
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Bootstrap Conf. Int via 2*SE76.33%82.63%87.67%88.64%90.9%
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Bootstrap Conf. Int via Percentile77.19%83.16%87.56%88.53%90.22%
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1-sample, n=30ChiSq(0.5), µ=0.5ChiSq(1), µ = 1ChiSq(3), µ = 3ChiSq(5), µ = 5N(0,1), µ = 0
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T Confidence Interval87.67%91.13%93.58%93.93%94.81%
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T Conf. Int. using Bootstrap SE87.29%90.74%93.23%93.63%94.4%
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Z Confidence Interval86.82%90.13%92.67%93.11%93.8%
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Bootstrap Conf. Int via Percentile87.63%90.58%92.46%92.88%93.31%
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2-sample, n1=n2=5ChiSq(0.5), µ_diff=0ChiSq(1), µ_diff=0ChiSq(3), µ_diff=0ChiSq(5), µ_diff=0N(0,1), µ_diff=0
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T Confidence Interval97.97%97.01%95.69%95.49%95.07%
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T Conf. Int. using Bootstrap SE96.14%94.81%93.45%93.32%92.67%
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Z Confidence Interval95.09%93.52%92.17%92.04%91.35%
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Bootstrap Conf. Int via Percentile85.45%86.43%87.51%87.79%87.9%
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2-sample, n1=n2=10ChiSq(0.5), µ_diff=0ChiSq(1), µ_diff=0ChiSq(3), µ_diff=0ChiSq(5), µ_diff=0N(0,1), µ_diff=0
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T Confidence Interval97.21%96.34%95.62%95.27%94.86%
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T Conf. Int. using Bootstrap SE96.19%95.16%94.5%94.14%93.65%
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Z Confidence Interval95.81%94.8%94.09%93.75%93.23%
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Bootstrap Conf. Int via Percentile89.51%90.49%91.65%91.6%91.88%
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2-sample, n1=n2=30ChiSq(0.5), µ_diff=0ChiSq(1), µ_diff=0ChiSq(3), µ_diff=0ChiSq(5), µ_diff=0N(0,1), µ_diff=0
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T Confidence Interval95.97%95.34%95.13%95.17%95.07%
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T Conf. Int. using Bootstrap SE95.57%94.96%94.75%94.76%94.73%
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Z Confidence Interval95.48%94.86%94.68%94.69%94.66%
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Bootstrap Conf. Int via Percentile92.36%92.97%93.69%93.88%94.18%