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# Introducing thep-Value

Just when you thought it was safe to get back in the water, along comes another shark! This is the perfect opportunity to throw another concept at you. You might feel like grumbling a little right now, but in the end you’ll be thanking me.

The p-value is the smallest level of significance at which the null hypothesis will be rejected, assuming the null hypothesis is true. The p-value is sometimes referred to as the observed level of significance. I know this may sound like a lot of mumbo-jumbo right now, but an illustration will help make this clear.
def•i•ni•tion
The observed level of significance is the smallest level of significance at which the null hypothesis will be rejected, assuming the null hypothesis ...

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