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Author Archives: statswithcats
Predict the Next President of the United States
The American Statistical Association is sponsoring a new statistics contest for high school and college students. The contest, known as Prediction 2016, challenges students to use statistics to predict the next president of the U.S. The purpose of the contest … Continue reading
Regression Fantasies
Common Reasons for Doubting a Regression Model Finding a model that fits a set of data is one of the most common goals in data analysis. Least squares regression is the most commonly used tool for achieving this goal. It’s … Continue reading
Posted in Uncategorized
Tagged accuracy, autocorrelation, correlation coefficient, dependent variable, heteroscedasticity, intercept, misspecification, model, multicollinearity, Non-linear relationships, number of samples, outliers, overfitting, precision, regression, sample size, samples, software, standardization, statistical analysis, statistical tests, statistics, stats with cats, stepwise regression, trend, variability, variance
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How to Write Data Analysis Reports in Six Easy Lessons
In every data analysis, putting the analysis and the results into a comprehensible report is the final, and for some, the biggest hurdle. The goal of a technical report is to communicate information. However, the technical information is difficult to … Continue reading
Posted in Uncategorized
Tagged audience, cats, client, data analysis, jargon, objectives, reports, statistical analysis, statistics, stats with cats, technical writing
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Ten Ways Statistical Models Can Break Your Heart
Models are beautiful. The ways their features are combined sets them apart from each other. Each has its own personality, sometimes pleasant, sometimes not, and often not what you would expect. Here are ten ways your love affair with statistical … Continue reading
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Tagged cats, correlation, model, models, regression, relationships, statistical analysis, statistics, stats with cats, variables
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Looking for Insight through a Window
At a press briefing on February 12, 2002, then Secretary of Defense Donald Rumsfeld addressed the absence of evidence linking the government of Iraq with weapons of mass destruction: There are known knowns. There are things we know that we … Continue reading
It’s Hard to be a Data-Driven Organization
Why is it so Hard? Do you work for a data-driven organization, or one that claims to be a data-driven organization, or one that wants to be a data-driven organization? You probably do, whether you work for a big retailer … Continue reading
Posted in Uncategorized
Tagged cats, control freak, data, data analysis, data-driven, decision-making, fear of information, information, intuition, stats with cats
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Posted in Uncategorized
Tagged cats, data analysis, data quality, data scrubbing, stats with cats
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Share Your Career with Students
I got a special request from my daughter in Hawaii that I hope you will read. Aloha. I teach 5th grade special education in a resource room setting. My students are currently researching careers they are interested in as part … Continue reading
How to Tell if Correlation Implies Causation
You’ve probably heard the admonition: Correlation Does Not Imply Causation. Everyone agrees that correlation is not the same as causation. However, those two words — correlation and causation — have generated quite a bit of discussion. Why Causality Matters No … Continue reading
2014 in review
The WordPress.com stats helper monkeys prepared a 2014 annual report for this blog. Here’s an excerpt: The Louvre Museum has 8.5 million visitors per year. This blog was viewed about 83,000 times in 2014. If it were an exhibit at … Continue reading
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Stats With Cats Blog 