WorksheetFunction.StDev Method
Definition
Important
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Estimates standard deviation based on a sample. The standard deviation is a measure of how widely values are dispersed from the average value (the mean).
public double StDev (object Arg1, object Arg2, object Arg3, object Arg4, object Arg5, object Arg6, object Arg7, object Arg8, object Arg9, object Arg10, object Arg11, object Arg12, object Arg13, object Arg14, object Arg15, object Arg16, object Arg17, object Arg18, object Arg19, object Arg20, object Arg21, object Arg22, object Arg23, object Arg24, object Arg25, object Arg26, object Arg27, object Arg28, object Arg29, object Arg30);Public Function StDev (Arg1 As Object, Optional Arg2 As Object, Optional Arg3 As Object, Optional Arg4 As Object, Optional Arg5 As Object, Optional Arg6 As Object, Optional Arg7 As Object, Optional Arg8 As Object, Optional Arg9 As Object, Optional Arg10 As Object, Optional Arg11 As Object, Optional Arg12 As Object, Optional Arg13 As Object, Optional Arg14 As Object, Optional Arg15 As Object, Optional Arg16 As Object, Optional Arg17 As Object, Optional Arg18 As Object, Optional Arg19 As Object, Optional Arg20 As Object, Optional Arg21 As Object, Optional Arg22 As Object, Optional Arg23 As Object, Optional Arg24 As Object, Optional Arg25 As Object, Optional Arg26 As Object, Optional Arg27 As Object, Optional Arg28 As Object, Optional Arg29 As Object, Optional Arg30 As Object) As DoubleParameters
- Arg1
- Object
Number1, number2, ... - 1 to 30 number arguments corresponding to a sample of a population. You can also use a single array or a reference to an array instead of arguments separated by commas.
- Arg2
- Object
- Arg3
- Object
- Arg4
- Object
- Arg5
- Object
- Arg6
- Object
- Arg7
- Object
- Arg8
- Object
- Arg9
- Object
- Arg10
- Object
- Arg11
- Object
- Arg12
- Object
- Arg13
- Object
- Arg14
- Object
- Arg15
- Object
- Arg16
- Object
- Arg17
- Object
- Arg18
- Object
- Arg19
- Object
- Arg20
- Object
- Arg21
- Object
- Arg22
- Object
- Arg23
- Object
- Arg24
- Object
- Arg25
- Object
- Arg26
- Object
- Arg27
- Object
- Arg28
- Object
- Arg29
- Object
- Arg30
- Object
Returns
Remarks
Important: This function has been replaced with one or more new functions that may provide improved accuracy and whose names better reflect their usage. This function is still available for compatibility with earlier versions of Excel. However, if backward compatibility is not required, you should consider using the new functions from now on, because they more accurately describe their functionality. For more information about the new function, see the StDev_S(Object, Object, Object, Object, Object, Object, Object, Object, Object, Object, Object, Object, Object, Object, Object, Object, Object, Object, Object, Object, Object, Object, Object, Object, Object, Object, Object, Object, Object, Object) method.
StDev assumes that its arguments are a sample of the population. If your data represents the entire population, then compute the standard deviation using StDev.
The standard deviation is calculated using the "unbiased" or "n-1" method.
Arguments can either be numbers or names, arrays, or references that contain numbers.
Logical values and text representations of numbers that you type directly into the list of arguments are counted.
If an argument is an array or reference, only numbers in that array or reference are counted. Empty cells, logical values, text, or error values in the array or reference are ignored.
Arguments that are error values or text that cannot be translated into numbers cause errors.
StDev uses the following formula:
Figure 1: Equation for the StDev method
where x is the sample mean AVERAGE(number1,number2,…) and n is the sample size.