The problem of estimating the variance of the ratio estimator in sampling with probability proportional to aggregate size is investigated. The form of nonnegative unbiased variance estimators is found ...
According to recent macroeconomic studies, microeconomic shocks can generate aggregate fluctuations (the granular hypothesis). I test this idea by studying the variance and tail probability of ...
Daniel Jassy, CFA, is an Investopedia Academy instructor and the founder of SPYderCRusher Research. He contributes to Excel and Algorithmic Trading. David Kindness is a Certified Public Accountant ...
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