| SpreadJS Documentation > Formula Reference > Formula Functions > CONFIDENCE.NORM |
This function returns confidence interval for a population mean.
CONFIDENCE.NORM(alpha,stdev,size)
This function has these arguments:
| Argument | Description |
|---|---|
| alpha | Alpha, significance level used in calculating confidence level, where confidence level is 100 times (1-alpha)% |
| stdev | Population standard deviation for the range |
| size | Number representing the size of the sample; if not an integer, the number is truncated |
The #VALUE! error value is returned if any argument is nonnumeric. The #NUM! error value is returned if size < 1.
Accepts numeric data for all arguments. Returns numeric data.
CONFIDENCE.NORM(0.5,B4,D5)
CONFIDENCE.NORM(0.5,R4C2,R5C4)
CONFIDENCE.NORM(0.05,3.5,150) gives the result 0.5601063629983405