Posts tagged: hypothesis testing
What a p-value Actually Measures
A p-value is not the probability the null hypothesis is true, not a measure of effect size, and not a verdict on whether a finding is real. Here is what it is.
Type I and Type II Errors: The Trade-Off You Can't Avoid
False positives and false negatives are not both minimizable at once. The threshold that reduces one will increase the other. Where it gets set is a choice, and it matters.