The false coin
Hypothesis contrast. Statistical significance. Hypothesis contrast related terms are described: type I error, type II error, power, and statistical significance.
Science without sense...double nonsense
Evidence Based Medicine pills
Science without sense...double nonsense
Evidence Based Medicine pills
Read MoreThe false coin
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.
To see well you must be blind
Blinding. Masking or blinding is a concealment technique that prevents the existence of information biases.