Sometimes, statistical terms can seem like they were zapped down
from outer space by sadistic, mealy-mouthed aliens: R-squared
adjusted, heteroeskadasticity, 3-parameter Weibull
But not all statistics terminology
should leave you feeling woozy and glassy-eyed. Some terms
actually make intuitive sense. Knowing those terms can help
you get a handle on output that may seem fuzzy at... Continue Reading
Data collection involves taking measurements, and this seems
like a simple thing when the subject is relatively simple.
However, even the simplest of cases has the potential to be messed
up. I found this out the hard way once. I hope sharing it
helps you avoid a similar experience.
Experienced researchers and quality practitioners know they need
to verify that a measurement system provides valid... Continue Reading
We use statistics because it's usually not practical to collect
all of the data from an entire population. Instead, we sample the
population, and then use statistics for that random sample to draw
conclusions about the whole population.Many common statistical procedures require data to be approximately
normal -- in other words, to roughly follow the bell curve.
But what happens when you have a... Continue Reading
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