WorksheetFunction.T_Test(Object, Object, Double, Double) Method
Definition
Important
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Returns the probability associated with a Student t-Test. Use T_TEST to determine whether two samples are likely to have come from the same two underlying populations that have the same mean.
public:
double T_Test(System::Object ^ Arg1, System::Object ^ Arg2, double Arg3, double Arg4);public double T_Test (object Arg1, object Arg2, double Arg3, double Arg4);Public Function T_Test (Arg1 As Object, Arg2 As Object, Arg3 As Double, Arg4 As Double) As DoubleParameters
- Arg1
- Object
Array1 - The first data set.
- Arg2
- Object
Array2 - The second data set.
- Arg3
- Double
Tails - Specifies the number of distribution tails. If tails = 1, T_Test uses the one-tailed distribution. If tails = 2, T_Test uses the two-tailed distribution.
- Arg4
- Double
Type - The kind of t-Test to perform.
Returns
Remarks
If array1 and array2 have a different number of data points, and type = 1 (paired), T_Test returns the #N/A error value.
The tails and type arguments are truncated to integers.
If tails or type is non-numeric, T_Test returns the #VALUE! error value.
If tails is any value other than 1 or 2, T_Test returns the #NUM! error value.
T_Test uses the data in array1 and array2 to compute a non-negative t-statistic. If tails=1, T_Test returns the probability of a higher value of the t-statistic under the assumption that array1 and array2 are samples from populations with the same mean. The value returned by T_Test when tails=2 is double that returned when tails=1 and corresponds to the probability of a higher absolute value of the t-statistic under the “same population means” assumption.