Q3.21
Statistical significance and effect size
Cards in this group · 4
- Q3.21.1A p-value is compatibility of the data with the hypothesis, not the chance the effect is real
- Q3.21.2Without a priori power analysis you cannot later judge whether n was enough
- Q3.21.3A one-tailed test lowers the significance bar and must be declared before the experiment
- Q3.21.4How wide a confidence interval is tells precision better than whether it includes zero