An impossible task
Resampling techniques: bootstrapping. Bootstrapping is a resampling technique that allows calculations that are impossible in another way when the sample is small.
Science without sense...double nonsense
Evidence Based Medicine pills
Science without sense...double nonsense
Evidence Based Medicine pills
Category Sin categoría
Everything is not normal
Management of non-normal data. When we are dealing with the management of non-normal data, we must use other strategies to make a hypotheses contrast.
A very robust family
Robust location parameters. We describe robust location parameters that are more robust to the presence of extreme values than arithmetic mean. The mean is a whimsical statistic. Of course, I am referring to the arithmetic mean. And why do I say that…
As an egg to a chestnut
Bar plot and histogram. We review the differences between bar plots, useful for representing qualitative variables, and histograms, for quantitative ones.
With very little we fine-tune a lot
Confidence interval and sample size. The characteristics of the standard error of a proportion allow us to make with confidence precise inferences without the need of very large samples.