WorksheetFunction.T_Dist_RT(Double, Double) Method
Definition
Important
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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.
public:
double T_Dist_RT(double Arg1, double Arg2);public double T_Dist_RT (double Arg1, double Arg2);Public Function T_Dist_RT (Arg1 As Double, Arg2 As Double) As DoubleParameters
- Arg1
- Double
X - The numeric value at which to evaluate the distribution.
- Arg2
- Double
Degrees_freedom - An integer that indicates the number of degrees of freedom.
Returns
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).