How to Eliminate Survivability Bias

There are two types of biases that we can try to eliminate. The first is called survivability bias and the second is data-cleaning bias. Survivability bias refers to the notion that there's a decay in how many heads you should expect after a certain number of flipping processes. For example, let's take this analogy and let's put it into traders, right? Let's say that you start with a population of 1000 traders and they're all make Random trades. There's literally no skill in this population of traders Well after one year, you know There's some chance that you were you were up or down but not really sure if it was based on anything real Or just luck.