So let's look at the formula. VRS is equal to, you take the squares of every single velocity or every single value and then you divide that by n. So almost the same thing as you did here, except you square every value. The reason you square every value is because a square will take away that negative sign and then you divide by n and you take the square root of that. So this will always give you a positive value. So let's take this example and let's use these two values to find our average. So BRMs is equal to 60 mph squared plus negative 60 mph squared.