Con muchas probabilidades

The Prudential commercial that aired during Super Bowl 47 features what Steven Strogatz calls the most viewed histogram of all time. According to the commercial people were asked the age of the old...

Plot.ly is a new site that allows for web-based plotting of graphs. The site allows a user to upload data, create a number of plots, and even write python code to generate custom graphs. Then the s...

La bibliometría está repleta de conjeturas verificadas sólo con pequeños conjuntos de datos. Tras analizar las publicaciones de 35.136 investigadores se confirma la fuerte correlación entre el índi...

Stephen Wolfram shares interesting Facebook data analysis finds from the Data Donor program of Wolfram|Alpha Personal Analytics for Facebook.

"The statistical methods presented here do not include all methods used in industry; nor all of the discoverers who have contributed to statistical methods. There are, however, commonalities amongst the statistical methods presented here. These breakthroughs in statistics were not discovered by seeking a breakthrough in statistics; they were found by people with a problem to solve"

Patterns, vocab and practice, practice, practice An important part of statistical analysis is being able to look at graphical representation of data, extract  meaning and make comments about it, pa...

The bubble chart is one of the most hopeless data graphics ever invented. It is sometimes useful for conceptual charts but trying to express data with it is a lost cause. The Wall Street Journal used a bubble chart to...

We discuss a comment on a previous post stating that the text of labels on the vertical axis of graphs must be horizontal by discussing the pros and cons of four possible positions for these labels.

Conditional probability (Bayes Theorem) introduced by growing trimmed trees. Understand WHY evidence alters our confidence of prior events. Hope this helps! ...

No es novedoso, pero conviene recordarlo....

Todos sabemos que jugar a la lotería es estadísticamente injusto y económicamente irracional. El valor esperado de la apuesta es negativo, es decir, que el premio por la probabilidad de ...

A basketball fanatic and a math whiz want to do for basketball what Bill James and sabermetrics did for baseball, and their innovative way of parsing data could revolutionize game analysis, providing coaches with new insights while making the game...

Data can lead to mistaken notions — that divorce, for instance, must hurt children.

There is not much of a story in the expected evolution of US population, according to the United Nations estimates and projections (1950-2100): (You'l

Hace un tiempo conté en el blog cómo había crecido tan rápido la población mundial en los últimos años. En esta ocasión me centraré en el dónde, qué lugares de la tierra ha ocupado esa población qu...

Believe it or not, all 4 of these data sets have the same (or similar) statistical qualities, but very obviously, look different when graphed!
All 4 have the same properties: A mean (of x) of 9, a...

Pie charts are perhaps the most ubiquitous chart type; they can be found in newspapers, business reports, and many other places. But few people actually understand the function of the pie chart and how to use it properly.

Datavisualization.ch Selected Tools is a collection of tools that we, the people behind Datavisualization.ch, work with on a daily basis and recommend warmly.

¿Y por qué? . . . Aleatoridad no es lo mismo que uniformidad. Y resulta que del mismo modo que nos cuesta mucho generar mentalmente una serie de valores realmente aleatorios, los seres humanos no somos demasiado buenos juzgando la aleatoriedad....