STDEVP | 
| STDEVP(number1 [,number2] [..]) | 
Returns the standard deviation based on an entire population.  | 
| number1 | The first number. | 
| number2 | (Optional) The second number. | 
| REMARKS | 
| * STDEV.P was added in Excel 2010 to replace this function. * This function is only available for backwards compatibility and should not be used. * The standard deviation is a measure of how Dispersed the values are from the mean. * Arguments that are text or logical values are ignored. * You can also use a single array or a reference to an array instead of arguments separated by commas. * The standard deviation is calculated using the "biased" or "n" method. * You can have a maximum of 255 arguments. * You can use the STDEV.P function to return the standard deviation based on an entire population. * You can use the STDEV.S function to return the standard deviation based on a sample. * You can use the STDEVA function to return the standard deviation based on a sample (including logical values and text). * You can use the STDEVPA function to return the standard deviation based on an entire population (including logical values and text). * For the Microsoft documentation refer to support.microsoft.com  | 
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| 1 - What is the standard deviation of 10,20,30,40. | 
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