Exercise

# Parameter estimation for multivariate skew-normals

Unlike multivariate normal, where the parameters estimates can be obtained using the sample mean and sample variance-covariance matrix, the parameters of the skew-normal distribution need to be estimated by an iterative process. You can make use of existing functions in the `sn`

packages to get the estimates.

In the previous exercise, we examined the `Ht`

and `Wt`

variables from the `ais.female`

object and determined that a skew-normal distribution can model the distribution. Now, we will estimate the parameters of this distribution.

Instructions

**100 XP**

- Calculate the parameters of the skew-normal distribution and assign it to object
`fit.ais`

. - Print only the skewness parameters.