I don&#x27;t know about the one that goes from a sample set, but the range provided is likely just the 90 or 95% confidence interval, which means you can get the single number by taking the average of the two numbers. Don&#x27;t do it though, it will tell you a lot <i>less</i> than the two numbers; a range that goes from -50 to +60 means that you have a lot of uncertainty and should probably not deploy, whereas +2 to +6 means you have little uncertainty and should deploy since it is almost certainly a win, if a small one.