 Statistics and Excel. Perfect negative correlation. Get ready, taking a deep breath, holding it in for 10 seconds, looking forward to a smooth soothing Excel. Here we are in Excel. If you don't have access to this workbook, that's okay because we'll basically build this from a blank worksheet. But if you do have access, three tabs down below, example, practice blank, example, in essence, answer key, practice tab, having pre-formatted cells so you can get to the heart of the practice problem. The blank tab, it's a blank worksheet so we can practice formatting the cells within Excel as we work through the practice problem. Let's take a look at the example tab to get an idea of where we will be going, what we will be doing. We are once again thinking about correlations between different data sets to see if there's a mathematical relationship or correlation between them. If there is, then the next logical question would be, is there a cause-and-effect relationship? If there is, then