Week #13 – Multiplicity issues

Multiplicity issues arise in a number of contexts, but they generally boil down to the same thing:  repeated looks at a data set in different ways, until something "statistically significant" emerges.

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Week #12 – Support vector machines

Support vector machines are used in data mining (predictive modeling, to be specific) for classification of records, by learning from training data.

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Week #11 – Attribute

In data analysis or data mining, an attribute is a characteristic or feature that is measured for each observation (record) and can vary from one observation to another.  It might

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Week #10 – Negative Binomial

The negative binomial distribution is the probability distribution of the number of Bernoulli (yes/no) trials required to obtain r successes.

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Week #9 – Random Walk

A random walk is a process of random steps, motions, or transitions.  It might be in one dimension (movement along a line), in two dimensions (movements in a plane), or in three dimensions or more.

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Week #5 – Differencing of a Time Series

in discrete time is the transformation of the series to a new time series where the values are the differences between consecutive values of the original series.

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Week #1 – Data Partitioning

In predictive modeling, data partitioning is the division of the data available for analysis into two or three non-overlapping

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Churn Trigger

Last year's popular story out of the Predictive Analytics World conference series was Andrew Pole's presentation of Target's methodology for predicting which customers were pregnant.

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Randomized Trials on online learning

Evidence show that there is no significant difference between taking an online introductory statistics course and a traditional in-person class.

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Facebook IPO

Facebook began trading around 11:30 this morning, and I spent 8 minutes

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Congratulations to Thomas Lumley!

Newly elected American Statistical Association (ASA) Fellow, and recognized for his outstanding professional contributions to and leadership in the field of statistical science.

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Arizona's immigration law goes before the Supreme Court this week...

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Julian Simon birthday

February 12 was the 80th anniversary of the birth of Julian Simon, an early pioneer in resampling methods.

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Statistics for Future Presidents

Statistics for Future Presidents - Steve Pierson, Director of Science Policy at ASA wrote interesting blog wondering how statistics for future presidents (or policymakers more generally) would compare with the recommended statistical skills/concepts for others. Take a look and let him know!

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The Data Scientist

The story of the prospective Facebook IPO, and prior IPO's from LinkedIn, Pandora, and Groupon all involve "data scientists".  Read an interview with Monica Rogati - Senior Data Scientist at LinkedIn to see the connection.

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Popular Mistakes in Data Mining

John Elder's presentations on common data mining mistakes are a must-see if you have any experience or plans in the data mining arena.

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Coffee causes cancer?

"Any claim coming from an observational study is most likely to be wrong." Thus begins "Deming, data and observational studies," just published in "Significance Magazine" (Sept. 2011).

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The sacrifice bunt

I was watching a Washington Nationals game on TV a couple of days ago, and the concept of "expected value" ...

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Epidemiologist joke

A neurosurgeon, pathologist and epidemiologist are each told to examine a can of sardines on a table in a closed room, and present a report.

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The Power of Round

Advertisers shy away from round numbers, believing that $99 appears significantly cheaper than $100...

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March Madness

Did the NCAA get the March Madness rankings right? Check out SportsMeasures.com

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Bees on the attack

What does Matt Asher's article "Attack of the Hair Trigger Bees" have to do with global warming? Matt Asher runs statisticsblog.com ...

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Catastrophe Modeling Assistant

Thinking about careers that use statistics? The job title "catastrophe modeling assistant" caught my eye recently in a job announcement. ...

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Random Monkeys

One of my gifts this holiday season was "A Drunkard's Walk: How Randomness Rules Our Lives,"

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