Okay kiddo, let's imagine you and your friends are playing a game called "Hide and Seek." You all decide to play ten rounds and keep track of how long it takes someone to find the person hiding each time.
At the end of the game, you add up all the times it took to find the hiders, and you notice that some rounds took longer than others. But you want to figure out which round was the most difficult overall.
That's when you learn about something called the harmonic mean p-value. The harmonic mean p-value helps you figure out the difficulty level of a game by looking at the time it took to find the hiders in each round.
First, you divide the number one by each time it took to find the hiders in each round. This gives you a bunch of fractions, which you then add up. You divide the total number of rounds played by the sum of those fractions, and that gives you the harmonic mean p-value.
The harmonic mean p-value helps you figure out how well you did in the game overall. If the value is low, it means that finding the hiders was pretty easy for you. If the value is high, it means finding the hiders was pretty difficult for you.
So, next time you play "Hide and Seek," remember to calculate the harmonic mean p-value to see how well you did! But don't worry if you don't understand it completely yet, it's a bit tricky even for grown-ups.