WorksheetFunction.T_Dist_RT Method
Returns the right-tailed Student t-distribution where a numeric value (x) is a calculated value of t for which the Percentage Points are to be computed. The t-distribution is used in the hypothesis testing of small sample data sets. Use this function in place of a table of critical values for the t-distribution.
Namespace: Microsoft.Office.Interop.Excel
Assembly: Microsoft.Office.Interop.Excel (in Microsoft.Office.Interop.Excel.dll)
Syntax
'Declaration
Function T_Dist_RT ( _
Arg1 As Double, _
Arg2 As Double _
) As Double
'Usage
Dim instance As WorksheetFunction
Dim Arg1 As Double
Dim Arg2 As Double
Dim returnValue As Double
returnValue = instance.T_Dist_RT(Arg1, _
Arg2)
double T_Dist_RT(
double Arg1,
double Arg2
)
Parameters
Arg1
Type: System.DoubleX - The numeric value at which to evaluate the distribution.
Arg2
Type: System.DoubleDegrees_freedom - An integer that indicates the number of degrees of freedom.
Return Value
Type: System.Double
Remarks
If any argument is non-numeric, T_Dist_RT returns the #VALUE! error value.
If degrees_freedom < 1, T_Dist_RT returns the #NUM! error value.
The degrees_freedom and tails arguments are truncated to integers.
If tails is any value other than 1 or 2, T_Dist_RT returns the #NUM! error value.
If x < 0, then T_Dist_RT returns the #NUM! error value.
If tails = 1, T_Dist_RT is calculated as T_DIST_RT = P( X>x ), where X is a random variable that follows the t-distribution. If tails = 2, T_Dist_RT is calculated as T_DIST_RT = P(|X| > x) = P(X > x or X < -x).
Because x < 0 is not allowed, to use T_Dist_RT when x < 0, note that T_DIST_RT(-x,df) = 1 – T_DIST_RT(x,df) = P(X > -x) and T_DIST_2T(-x,df) = T_DIST_2T(x df) = P(|X| > x).