1) A normal population distribution is needed for the following statistical tests:

2) With regard to statistics:

3) With regard to the chi-squared test:

4) The prevalence rate of a disease has the following features:

5) An aetiological factor must satisfy the following before one can say that it is casually related to a disease:

6) A 95 % confidence interval:

7) Meta-analysis of randomized controlled trials:

8) The following are true about evidence-based medicine:

9) The following are true about errors in clinical trials:

10) The following are true about a normal (Gaussian) distribution except:

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