Independence matters
Paired data. When describing and dealing with random variables, we must consider whether they are independent data or paired data.
Science without sense...double nonsense
Evidence Based Medicine pills
Science without sense...double nonsense
Evidence Based Medicine pills
Read MoreIndependence matters
The false coin
Hypothesis contrast. Statistical significance. Hypothesis contrast related terms are described: type I error, type II error, power, and statistical significance.
The necessity of chance
Randomization. Randomization favors that the characteristics of the participants are distributed homogeneously among the groups.
To err is human
Systematic error. Systematic error, also called bias, usually leads to an inaccurate estimate of the variable we are studying.
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.