Statistics

Spearman's Rank-Order Correlation
https://statistics.laerd.com/statistical-guides/spearmans-rank-order-correlation-statistical-guide.php

Null Hypothesis
https://www.statisticshowto.com/probability-and-statistics/null-hypothesis/

PDF and CDF
https://www.graduatetutor.com/statistics-tutor/probability-density-function-pdf-and-cumulative-distribution-function-cdf/

MATLAB USEFUL FUNCTIONS

INFROMATION RATIO
https://www.mathworks.com/help/finance/inforatio.html