Oddly, the best hope for avoiding that 90-day wait could come from your cable company. HBO says it's in discussions with some cable, satellite and telephone providers that could sell access to HBO Now at launch, but nothing is set so far.
1 Use the Excel Formula =STDEV() and select the range of values which contain the data. 2  This calculates the sample standard deviation (n-1).3  Use the web Standard Deviation calculator and paste your data, one per line. Use the Excel Formula =STDEV() and select the range of values which contain the data. 2  This calculates the sample standard deviation (n-1).
The Mean Absolute Deviation is calculated in three simple steps. Alternatively , you can use the excel formula =AVEDEV(56,78,90) to obtain the result. There are different formulas for the calculation of mean absolute deviation. For example mean absolute deviation from mean and mean absolute deviation from median.