Science without sense...double nonsense
Evidence Based Medicine pills
Science without sense...double nonsense
Evidence Based Medicine pills
Category Statistics
Don’t leave things half done
Regression model diagnostics. Once we obtain the simple linear regression model, we have to proceed to its validation and to the diagnosis of the model. The first case consists of checking that the coefficients are statistically significant. The second is…
Horror vacui
Yates’ continuity correction. We often use approximations with continuous probability distributions to solve hypothesis contrasts with variables that follow a discrete distribution. In these cases, we must apply a continuity correction, the best known being the Yates’ continuity correction.
Its bark is worse than its bite
Simple correlation. Correlation is defined as the strength and sense of association between two random variables. Some of the most widely used correlation coefficients are described, such as Pearson’s correlation coefficient, Spearman’s correlation coefficient, and Kendall’s tau coefficient.
Exoteric or esoteric?
Multivariate analysis. Multivariate analysis is the set of statistical procedures that simultaneously study various characteristics of the same subject or entity, in order to analyze the interrelation that may exist among all the random variables that these characteristics represent. The…