Three feet of a cat
Collinearity in lineal multiple regression. Collinearity in multiple regression is described, as well as the two parameters for its study, the increase and the inflation factors of variance.
Science without sense...double nonsense
Evidence Based Medicine pills
Science without sense...double nonsense
Evidence Based Medicine pills
Category Statistics
In search of causality
Discontinuity regression. Discontinuity regression is a quasi-experimental design that allows causal inference to be made in the absence of randomization.
Censorship
Survival tables and censored data. We describe the methodology of preparing survival tables and the treatment of censored data in this type of study with time to event variables.
A case of misleading probability
Bayes’ theorem. We describe the concept of conditional probability and the development of Bayes’ theorem, used to calculate the conditional probability of an event. Today we are going to see another of those examples where intuition about the value of certain…
Do not be misled by the outliers
Robust scale parameters. We describe robust scale parameters, such as the median absolute deviation or the winsorized standard deviation, less susceptible to extreme values.