Science without sense...double nonsense
Evidence Based Medicine pills
Science without sense...double nonsense
Evidence Based Medicine pills
Tag Power
The false coin
Hypothesis contrast. Statistical significance. Hypothesis contrast related terms are described: type I error, type II error, power, and statistical significance.
The tails of p
Bilateral vs unilateral testing. We can choose between a bilateral vs unilateral testing. In the second case, we assume the direction of the difference in effect.
Freedom in degrees
Degrees of freedom. The degrees of freedom refer to the number of observations in a sample that can take any possible value.
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.