A measure with a pedegree
The sample size required to estimate a population mean depends on the desired level of confidence and precision, in addition on the variable’s variance in the population.
Science without sense...double nonsense
Evidence Based Medicine pills
Science without sense...double nonsense
Evidence Based Medicine pills
Tag Mean
Why spare one?
Biased and unbiased estimators. The mean one of the unbiased estimators and accurately approximates the population value. The standard deviation is a biased estimator.
Meat or fish?
Mean or median? Mean and median are two measures of centralization. It is discussed in which situations it is preferable to use one or the other to describe data.
The error of confidence
Mean’s confidence interval. Obtaining a mean, the concept of standard error and the calculation of the mean’s confidence interval are described.