If you use Microsoft Excel on a regular basis, odds are you work with numbers. Put those numbers to work. Statistical analysis allows you to find patterns, trends and probabilities within your data. In this MS Excel tutorial from everyone's favorite Excel guru, YouTube's ExcelsFun, the 10th installment in his "Excel Statistics" series of free video lessons, you'll learn how about data sets and the nominal, ordinal, interval and ration scales/levels of measurement and see two Pivot Tables that allow quick summarization of nominal- and ordinal-level data to calculate the mode. Also see how the AVERAGE function (mean) does not work for nominal and ordinal level data, but does work for interval and rational level data.