Survival function

A survival function is used to figure out how likely it is that something will last for a certain amount of time. To understand it better, let's use a simple example. Imagine you have a game and you want to know how many levels you can get through before you get stuck. The survival function can help figure out the answer. It does this by looking at how many people have gotten through each level in the game and then using that information to predict how many more levels you can get through. For example, if you look at the data and see that 50% of people get through the first level, 30% get through the second level, and 15% get through the third level, then the survival function can tell you that you are most likely going to get stuck at the third level.