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Author Archives: statswithcats
Resurrecting the Unplanned
Even if you took a class in statistics or another form of data analysis, you probably didn’t hear about frankendata. Frankendata is created when data, collected by different people, at different times and locations, analyzed with different procedures and equipment, … Continue reading
Posted in Uncategorized
Tagged cats, frankendata, population, samples, standardization, statistical analysis, statistics, stats with cats
3 Comments
Tales of the Unprojected
We have a habit in writing articles published in scientific journals to make the work as finished as possible, to cover up all the tracks, to not worry about the blind alleys or describe how you had the wrong idea … Continue reading
Posted in Uncategorized
Tagged bias, cats, client, communications, objectives, politics, polls, project management, relationships, reviewer, statistical analysis, statistics, stats with cats, surveys
4 Comments
The Data Scrub
Garbage in, garbage out is a saying that dates back to the early days of computers but is still true today, perhaps even more so. If the numbers you use in a statistical analysis are incorrect (garbage), so too will … Continue reading
Posted in Uncategorized
Tagged cats, data scrubbing, statistical analysis, statistics, stats with cats, validation, verification
15 Comments
Perspectives on Objectives
Conducting a statistical analysis can be like traveling to a foreign country that you’ve never been to before. You had better have a map and some idea of what you want to do there or you might end up wasting … Continue reading
Posted in Uncategorized
Tagged cats, goals, objectives, proposals, regulations, SAS, statistical analysis, statistics, stats with cats
5 Comments
Assuming the Worst
If you’re going to be poking around data looking for patterns and anomalies, you should be aware of the fundamental requirements you need to fulfill, or at least assume you fulfill. Consider this. All models make assumptions, an evil necessity … Continue reading
It was Professor Plot in the Diagram with a Graph
You probably were taught how to graph data in high school. Depending on your work, you may frequently plot data yourself or look at graphs prepared by others. Even if you don’t use graphs on your job, you may run … Continue reading
Posted in Uncategorized
Tagged axis, cats, charts, diagrams, graphs, jargon, McCandless, measurement scales, number of samples, plots, statistical analysis, statistics, stats with cats, Tufte
12 Comments
It’s All in the Technique
You can’t understand your data unless you control extraneous variance attributable to the way you select samples, the way you measure variable values, and any influences of the environment in which you are working. Using the concepts of reference, replication … Continue reading
Posted in Uncategorized
Tagged bias, blinding, cats, control sample, covariate, jargon, measurement, placebo, precision, samples, SOP, statistical analysis, statistics, stats with cats, uncertainty, variability, variance, variance control
11 Comments
The Measure of a Measure
If you can measure a phenomenon, you can analyze the phenomenon. But if you don’t measure the phenomenon accurately and precisely, you won’t be able to analyze the phenomenon accurately and precisely. So in planning a statistical analysis, once you … Continue reading
The Heart and Soul of Variance Control
You can’t understand data without controlling the variance. You can’t control variance without understanding the data. Variance Doesn’t Go Away By Ignoring It In an ideal universe, your dataset would contain no bias and only the natural variability you want … Continue reading
Posted in Uncategorized
Tagged bias, cats, precision, randomization, replication, standardization, statistical analysis, statistics, stats with cats, surveys, uncertainty, variability, variance
11 Comments
Stats With Cats Blog 