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A confidence interval is an interval that covers an unknown parameter with $100(1-\alpha)\%$ confidence. Confidence intervals are a frequentist concept. They are often confused with credible intervals which is the Bayesian analog.

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Meaning of confidence interval refered to standard deviation

I was reading a proteomic paper few days ago and I got confused on one aspect. In the paper is written: "The global mean and S.D. of protein ratios (47-1/D3) were calculated for each replicate. The c …
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