WorksheetFunction.Confidence_T(Double, Double, Double) Method
Definition
Important
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Returns the confidence interval for a population mean, using a Student's t distribution.
public:
double Confidence_T(double Arg1, double Arg2, double Arg3);public double Confidence_T (double Arg1, double Arg2, double Arg3);Public Function Confidence_T (Arg1 As Double, Arg2 As Double, Arg3 As Double) As DoubleParameters
- Arg1
- Double
Alpha - The significance level used to compute the confidence level. The confidence level equals 100*(1 - alpha)%, or in other words, an alpha of 0.05 indicates a 95 percent confidence level.
- Arg2
- Double
Standard_dev - The population standard deviation for the data range and is assumed to be known.
- Arg3
- Double
Size - The sample size.
Returns
Remarks
If any argument is nonnumeric, Confidence_T returns the #VALUE! error value.
If alpha ≤ 0 or alpha ≥ 1, Confidence_T returns the #NUM! error value.
If standard_dev ≤ 0, Confidence_T returns the #NUM! error value.
If size is not an integer, it is truncated.
If size equals 1, Confidence_T returns #DIV/0! error value.
If size equals 1, Confidence_T returns #DIV/0! error value.