Size and power
Power and sample size. Power and sample size are two related concepts, which have to do with the ability to detect the studied effect.
Evidence Based Medicine pills
Evidence Based Medicine pills
Power and sample size. Power and sample size are two related concepts, which have to do with the ability to detect the studied effect.
Residuals. The calculation of the residuals of a contingency table is shown, using the observed and expected values.
Kappa coefficient of interobserver agreement. When we have measurements obtained by two observers, the kappa coefficient allows us to separate the degree of coincidence due to chance.
Centralization and dispersion. The measures of centralization and dispersion, arithmetic mean and standard deviation, as well as the calculation of kurtosis are described.
Standardization. Standardization is described, which consists of subtracting the mean from a value and dividing it by its standard deviation.