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).
If our data is located in cells A2 to A10, then (omitting the quotation marks) =STDEV.S(A2:A10) will obtain the sample standard deviation ofthe entries in cells A2 to A10. Rather than typing the location of the cells where our data is located, we can use a different method.