Jamshidian, Mortaza, Siavash Jalal, and Camden Jansen. 2014. “MissMech: An R Package for Testing Homoscedasticity, Multivariate Normality, and Missing Completely at Random (MCAR)”. Journal of Statistical Software 56 (6):1-31. https://doi.org/10.18637/jss.v056.i06.