Calculating correlation can be time-consuming but software like Excel makes it much easier. You can use several methods to calculate correlation in Excel.

The correlation function will ask for two rows of data from two identical timeframes. Input, click ok and voila—correlation coefficient. The correlation coefficient is a number between 1 and -1.

An Excel pie chart displays categories of data as wedges in a circular graph. This format allows users to quickly see the contribution each category makes to the total figure and a correlation of ...