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Tag Archives: bias
How to Tell if a Political Poll is Legitimate
Four things to look for. Why People Hate Polls It’s probably true that everybody has taken a survey at some point or other. What’s also probably true is that most people think polling is easy. And why not? Google has … Continue reading
Posted in Uncategorized
Tagged bias, frame, jargon, number of samples, politics, polls, populations, sample, sample size, statistics, stats with cats, surveys
1 Comment
O.U..T…L….I……E……..R………………..S
Datasets may contain values that is far greater (or less) than, or doesn’t display the same characteristics as the other values. If the influential observation is not representative of the population being sampled, it is called an outlier. Deciding what to do with outliers can be a challenge for data analysts. Continue reading
Posted in Uncategorized
Tagged anomaly, bias, cats, correlation coefficient, diagrams, influential observations, outlier
8 Comments
Polls Apart
Election season is fast approaching so you can be sure a plethora of polls will soon be adding to the mayhem. Polls educate us in two ways. They tell us what we, or at least the population being polled, think. … Continue reading
Posted in Uncategorized
Tagged bias, cats, margin of error, number of samples, politics, polls, population, sample size, samples, statistics, stats with cats, surveys
4 Comments
Ockham’s Spatula
Model building is like climbing a mountain. It’s what you spend so much time planning for. It’s what everybody wants to talk about. It’s what gives you that euphoric feeling of accomplishment when you’re finished. But just as mountain climbers … Continue reading
Posted in Uncategorized
Tagged bias, cats, client, model, Ockham, politics, prediction models, statistical analysis, statistics, stats with cats
5 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
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 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
There’s Something About Variance
Imagine practicing hitting a target using darts, bow and arrow, pistol, cannon, missile launcher, or whatever. You aim for the center of the target. If your shots land where you aimed, you are considered to be accurate. If all your … Continue reading
Posted in Uncategorized
Tagged accuracy, bias, cats, environmental, jargon, measurement, politics, population, sampling, statistical analysis, statistics, stats with cats, uncertainty, variability, variance
19 Comments
Stats With Cats Blog 