Confidence
Contents
Description
Calculate the confidence interval for a population mean, using a normal distribution by default.
Syntax
double Confidence(double alpha, double std, int size[, int dist])
Parameters
alpha
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, the significance level used to compute the confidence level.
std
- The population standard deviation for the data.
size
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, the sample size.
dist
-
Optional. Distribution.
- 1 = Normal distribution, default
- 2 = Student's T distribution
Return
Return the confidence interval for a population mean, or missing value "--" for error.
Example
confidence(0.05, 1.5, 100) = ; // 0.29399459768101