Used to calculate the real probability of false alarm in the 3-sigma R chart.
alpha.risk(n)
| n | The sample size. |
|---|
Return the value of the alpha risk for a given sample size n.
This alpha risk is calculated under the exact R statistics distribution and its values for small sample sizes will be much larger than the reference value 0,0027.
alpha.risk(15)#> [1] 0.004493839