A helper function to find the lambda for all potential outliers in each iteration.

## Usage

`esd.critical(alpha, N, i)`

## Arguments

- alpha
(`numeric`

)

type-I-risk, \(\alpha\).

- N
(`integer`

)

the total number of samples.

- i
(`integer`

)

the iteration number, less than the number of biggest
potential outliers.

## Value

a lambda value calculated from the formula.

## Examples

```
esd.critical(alpha = 0.05, N = 100, i = 1)
#> [1] 3.384083
```