The product moment correlation coefficient is often used even for ordinal data with only a few scale steps. This procedure may lead to biased results, where the bias depends on the number of scale ...

In the chi square analysis of cross-tabulated variables, the problem of low cell counts is usually solved by combining categories, at the cost of a loss of information, or by using larger samples, at ...

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 ...

Peptides derived from proteolytic processing of the β–amyloid precursor protein (APP), including the amyloid–β peptide, are important for the pathogenesis of Alzheimer's dementia. We found that ...

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If you mastered even one of these games as a kid, chances are you were training intelligence in a way that didn’t look like ...

Camping tents and sleeping bags may get the glory, but your camping table is arguably the MVP of any camping trip. That’s because it’s the glue that ties together the best camp kitchens, acting as the ...

When and where is AFCON 2025? The latest edition of AFCON will take place from Sunday December 21 2025 to Sunday January 18 2026, marking the first time the tournament has taken place over the ...

This important study combines optogenetic manipulations and wide-field imaging to show that the retrosplenial cortex controls behavioral responses to whisker deflection in a context-dependent manner.

A guide with examples for learning this key idea in options trading Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive ...