Snip!t channels - Alan Dix

But after writing about p-values again and again, and recently issuing a correction on a nearly year-old story over some erroneous information regarding a study’s p-value (which I’d taken from the scientists themselves and their report)...

This past summer, a heated debate broke out about a tool used in courts across the country to help make bail and sentencing decisions. It’s a controversy that touches on some of the big criminal justice questions facing our society. And i...

This is a free, community driven Q&A for statisticians, ... miners and data visualization experts.

Making sense of data is one of the great challenges of t... we live in. While it is becoming easier to collect and s... data, from personal medical data, to scientific data, to... commercial data, there are relatively few people trained... and machine

So far we have been thinking of the probability for gett... know that the mean value should be . Now suppose we make... get counts, but we don't know anything about , except t... nonnegative, of course. We may turn the question around ... the most li

Critical Values for the Chi-Squared Distribution

Critical Values for Significance Tests

But most importantly, data-driven science is less intell... then hypothesis-driven science. Data mining is sweet, an... Plotting multivariate data, maps, “relationships” an... visualizations is hip and catchy, everybody can understa... thinking ab

ISI - International Statistical Institute
Free Statistical Tools on
the WEB

To study riffle shuffles rigorously, Diaconis used a pow... tool called a Markov chain.

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... icks them out, or makes them up, to suit his purpose.”

“Slim by Chocolate!” the headlines blared. A team of... had found that people on a low-carb diet lost weight 10 ... they ate a chocolate bar every day. It made the front pa...
I am Johannes Bohannon, Ph.D. Well, actually my name is ...
Other than

A scientific result is not truly established until it is... confirmed. This is one of the tenets of experimental sci...

General FAQ #25: Handling missing or incomplete data
Question:
I have a database that contains records with incom ...
participants did not complete all of the availab ...
How should I handle this problem?

Welcome to the Journal of Articles in Support of the Nul... the past other journals and reviewers have exhibited a b... articles that did not reject the null hypothesis. We see... offering an outlet for experiments that do not reach the... significanc

Multi-Relational Data Mining (MRDM) is the multi-discipl... with knowledge discovery from relational databases consi... tables. Mining data which consists of complex/structured... falls within the scope of this field, since the normaliz... of such obj

In 1954, Darrell Huff wrote a neat little book called Ho... Statistics, a how-to guide for marketers to mislead and ... into believing just about anything with the right graphi... well-placed stat. Computationally speaking, we’ve come... 1954, but i

Statistical tables
1. t-statistics
2. Chi-square statistics
3. F-statistics, P=0.05
... 5. F-statistics, P=0.001

The launch of the clinicaltrials.gov registry in 2000 se... striking impact on reported trial results, according to ... that many researchers have been talking about online in ...
A 1997 US law mandated the registry’s creation, requir ...

But then reality intervened. Sensitive to controversies over reproducibility, Motyl and his adviser, Brian Nosek, dec... the study. With extra data, the P value came out as 0.59... to the conventional level of significance, 0.05. The eff... disappeared

SSJ is a Java library for stochastic simulation, develop... Département d'Informatique et de Recherche Opérationne... Université de Montréal.
It provides facilities for generating uniform and nonuni ...
applying quasi-Monte Carlo methods, collecting

Policy statement aims to halt missteps in the quest for ...

Statistics is the science and practice of developing hum... through the use of empirical data. It is based soundly o... theory which is a branch of applied mathematics. Within ... theory, randomness and uncertainty are modelled by proba... Statistical

Ridding science of shoddy statistics will require scruti... not merely the last one

I was interviewed twice on the radio on Friday evening t... McDonnell’s new fiscal rule, once on LBC and the other... both cases the interviewers were quite explicit in stati... known that Labour always borrowed more than the Conserva... why the ele

As an expert reviewer, it is sometimes necessary to ensure a paper is rejected. This can sometimes be achieved by highlighting improper statistical practice. This technical note provides guidance on how to critique the statistical analysis of neuroimaging