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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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Monthly Archives: July 2010
Samples and Potato Chips
Samples are like potato chips. You’re never satisfied with just one. Every one you take makes you want more. And you’re never sure you’ve had enough until you’ve had way too many. Betcha Can’t Take Just One One observation. … Continue reading
Purrfect Resolution
No matter what their area of expertise, statisticians are asked certain questions with such predictability that it borders on the deterministic. No question is asked more often than: How many samples do I need? Most statisticians wish they could answer … Continue reading
Posted in Uncategorized
Tagged cats, number of samples, polls, resolution, rule of thumb, sample size, samples, statistical tests, stats with cats, surveys, trend, uncertainty
12 Comments
30 Samples. Standard, Suggestion, or Superstition?
If you’ve ever taken any applied statistics courses in college, you may have been exposed to the mystique of 30 samples. Too many times I’ve heard statistician do-it-yourselfers tell me that “you need 30 samples for statistical significance.” Maybe that’s … Continue reading
It’s All Greek
When Humpty Dumpty uses a word, it means just what he chooses it to mean, neither more nor less. To people not conversant in a technical specialty, it seems that all the experts are Humpty Dumptys. Statistics is no exception. … Continue reading
Posted in Uncategorized
Tagged cats, information, jargon, journal, math, mean, Normal distribution, probability, standardization, statistical analysis, statistical tests, statistics, stats with cats, uncertainty
10 Comments
Stats With Cats Blog 