Investopedia

Understanding Normal Distribution: Key Definitions, Formula, and Real-Life Examples

Charlene Rhinehart is a CPA , CFE, chair of an Illinois CPA Society committee, and has a degree in accounting and finance from DePaul University. Vikki Velasquez is a researcher and writer who has ...
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Shorter Confidence Intervals for the Mean of a Normal Distribution with Known Variance

This is a preview. Log in through your library . Abstract This paper obtains and explores a family of confidence procedures for the mean of a normal distribution which are, in a certain sense, more ...
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What Is Variance in Statistics? Definition, Formula, and Example

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...
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Sequential Confidence Intervals for the Mean of a Normal Distribution with Known Variance

This is a preview. Log in through your library . Abstract We consider sequential procedures for obtaining confidence intervals of prescribed length and confidence coefficient for the mean of a normal ...