Description: Inspired by the Wall Street Bets / GameStop stock episode in January 2021, this article outlines the market mechanics and risk considerations that lead to market failure. The consequences of unfilled buy orders, unfilled short sell orders, and more short shares than long shares are all explained. Also, some steps to protect a financial institution that has been caught shorting a popular company are explored.

Description: While many know that machine learning is a big deal and even have a general idea of what it is, many do not know what machine learning can do for them. As an alternative to citing achievements or explaining algorithms, this article outlines the challenges that occur in statistics and the solutions that machine learning offers. Some of those challenges include correlated predictors, missing data, data interaction, and prediction intervals. Corresponding solutions include regularization technics, missing value imputation with KNN, tree based models, and cluster analysis for backtesting.