We're saying, so this whole term right here is how many standard deviations we are away from the mean. And this is actually called a standard z-score. One thing I've found in statistics is there's a lot of words and a lot of definitions and they all sound very fancy. The standard z-score. But the underlying concept is pretty straightforward. Let's say I had a probability distribution and I get some x value that's out here and it's 3 and 1 half standard deviations away from the mean. Then it's standard z-score is 3 and 1 half.