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The postings on this blog are my own (except as noted) and do not necessarily represent the positions, strategies or opinions of my current, past, and future employers, cats and other family members, relatives, Facebook friends, real friends, Charlie Sheen, people who sit next to me on public transportation, or myself when I’m in my right mind.-
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# Category Archives: Uncategorized

## What to Look for in Data – Part 2

What to Look for in Data – Part 1 discusses how to explore data snapshots, population characteristics, and changes. Part 2 looks at how to explore patterns, trends, and anomalies. There are many different types of patterns, trends, and anomalies, … Continue reading

Posted in Uncategorized
Tagged cats, censored data, curvilinear, cycles, data relationships, graphs, heteroskedasticity, homoskedasticity, interpolation, linear, outliers, shifts, shocks, simpson's paradox, statistics, stats wit cats, steps, time series, transformations, what to look for
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## WHAT TO LOOK FOR IN DATA – PART 1

Some activities are instinctive. A baby doesn’t need to be taught how to suckle. Most people can use an escalator, operate an elevator, and open a door instinctively. The same isn’t true of playing a guitar, driving a car, or … Continue reading

Posted in Uncategorized
Tagged cats, censored data, data, data analysis, data scrubbing, descriptive statistics, graphs, measurement scales, missing data, replicates
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## DARE TO COMPARE – PART 4

Part 3 of Dare to Compare shows how one-population statistical tests are conducted. Part 4 extends these concepts to two-population tests. To review, this flowchart summarizes the the process of statistical testing. First, you PLAN the comparison by understanding the … Continue reading

Posted in Uncategorized
Tagged ANOVA, blogs, cats, populations, statistical comparisons, statistical tests, statistics, statswithcats, t-test
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## DARE TO COMPARE – PART 3

Parts 1 and 2 of Dare to Compare summarized fundamental topics about simple statistical comparisons. Part 3 shows how those concepts play a role in conducting statistical tests. The importance of these concept are highlighted in the following table. Test … Continue reading

## You Need Statistics to Make Wine

The American Statistical Association has identified 146 college majors that require statistics to complete a degree. You probably wouldn’t be surprised that statistics is required for degrees in mathematics, engineering, physics, astronomy, chemistry, meteorology, and even biology and geology. Most … Continue reading

Posted in Uncategorized
Tagged college degrees, college majors, statistics, stats with cats
1 Comment

## Dare to Compare – Part 2

Part 1 of Dare to Compare summarized several fundamental topics about statistical comparisons. Statistical comparisons, or statistical tests as they are usually called, involve populations, groups of individuals or items having some fundamental commonalities. The members of a population also … Continue reading

## Dare to Compare – Part 1

In school, you probably had to line up by height now and then. That wasn’t too difficult. There weren’t too many individuals being lined up and they were all in the same place at the same time. An individual’s place … Continue reading

Posted in Uncategorized
Tagged blogs, cats, Normal distribution, population, statistical comparisons, statistical tests
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## Catalog of Models

Whether you know it or not, you deal with models every day. Your weather forecast comes from a meteorological model, usually several. Mannequins are used to display how fashions may look on you. Blueprints are drawn models of objects or … Continue reading

Posted in Uncategorized
Tagged analytical, blogs, cats, data mining, deterministic, empirical, models, numeric, probabilistic, relationships, statistical, statistics, stats with cats, stochastic, theoretical
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## How to Describe Numbers

Say you wanted to describe someone you see on the street. You might characterize their sex, age, height, weight, build, complexion, face shape, hair, mouth and lips, eyes, nose, tattoos, scars, moles, and birthmarks. Then there’s clothing, behavior, and if … Continue reading

Posted in Uncategorized
4 Comments