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Author Archives: statswithcats
Visualizations versus Infographics
Visualizations and infographics are both visual representations of data that are often confused. In fact, there is not a clear line of demarcation between the two. Both are informative. Both can be static or animated. Both require a knowledgeable person … Continue reading
How to Analyze Text
Statisticians love to analyze numbers, but what do they do when what they want to explore is unformatted text? It happens all the time. The text may come from open-ended responses on surveys, social networking sites, email, online reviews, public … Continue reading
Posted in Uncategorized
Tagged data mining, keywords, sentiment analysis, stats with cats, text analysis, text mining, word cloud, word count, wordle, writing
6 Comments
Hellbent on Measurement
Any variable that you record in a dataset will have some scale of measurement. Scales of measurement are, simply put, the ways that associated numbers relate to each other. Scales are properties of numbers, not the objects being measured. You … Continue reading
Posted in Uncategorized
Tagged cats, cyclic scales, interval, location, measurement, nominal, ordinal, orientation scales, ratio, Scales, statistics, Stats 101, stats with cats, Stevens, time
7 Comments
Searching for Answers
Need to find something out, just Google it. Now that Google is a verb as well as a noun, it’s easy. But … It Hasn’t Always Been Easy Adults under 30, Millennials, grew up with smartphones, laptop and tablet computers, … Continue reading
Posted in Uncategorized
Tagged cats, Google, information, keywords, library, math, number of samples, numbercrunching, search, statistical analysis, statistics, stats with cats, views, word cloud, wordpress.com
3 Comments
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
4 Comments
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
5 Comments
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
Posted in Uncategorized
Tagged cats, correlation, model, models, regression, relationships, statistical analysis, statistics, stats with cats, variables
2 Comments
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
