Practice question · Fill in the blanks
Complete the definition of the p-value.
The p-value is the probability of ______.
Word bank: observing data at least as extreme as yours, assuming H0 is true · the null hypothesis being true · the alternative hypothesis being true · having made a Type II error on this test
Hints
- The p-value is computed under an assumption. Which one?
- It is a statement about the data, not about the hypotheses.
Show the answer
The p-value is the probability of observing data at least as extreme as yours, assuming H0 is true.
Why
The p-value assumes H0 and asks how surprising the data would be. It is not the probability that H0 is true, that would be a statement about the hypothesis, which this framework never assigns a probability to.
Practise Hypothesis Testing
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