One important question is whether the magnitude of PEH depends on the general BP status of the individual. Greater PEH in individuals with particularly high BP status would offer even more support for ...

The correlation function is a useful signal-analysis tool that engineers often overlook. Its formidable equation, which you have probably not thought about since your undergraduate signals and systems ...

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 ...

NOTE: F Statistic for Roy's Greatest Root is an upper bound. As Output 20.1.2 shows, the first canonical correlation is 0.7956, which would appear to be substantially larger than any of the ...

I often teach in my statistics class that correlation should not be confused with causation. That is, observing that two variables move together does not necessarily mean that one variable caused the ...

"Synthetic chemical in consumer products linked to early death, study finds.” “People with the highest levels of phthalates had a greater risk of death from any cause, especially cardiovascular ...

There are a lot of SEO studies out there, but not all of them are made equal. Here's how to decide if X is really affected by Y, or merely a coincidence. Every so often the SEO community will erupt ...

This example defines modules to compute correlation coefficients between numeric variables and standardized values for a set of data. /* Module to compute correlations */ start corr; n=nrow(x); /* ...

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