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Mean, Standard Deviation, Coefficient Of Variation, Relative Error, And 95% Confidence Interval: Sample Sizes

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how are mean, standard deviation, coefficient of variation, relative error, and 95% confidence interval affected by sample size (n=5, n=10), larger size of the measurement (1ml vs. 10 ml)? Which sample size is better and which size of measurement is better?

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The expert examines relative error and 95% confidence intervals for sample sizes.

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When sample size increases from n=5 to ...

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