system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: The algorithm the Banker to come up with an offer on the popular show "Deal or No Deal"

I tried just doing a normal mean of the remaining prizes but that doesn't check out. Does anyone know? A simple google search shows that there are a few theories but none seemed to be 100% accurate.
gpt
The value offered by the banker is usually just below the expected value of your case. Expected value is fairly easy to compute.

Let's say 3 cases are in play :$1 million, $10,000, and $1. The expected value is $336,667. The Banker would likely offer $320,000 in this case.

The trick to playing though is not to compare the offer to your current expected value, but rather to the expected value after the next round.