It seems you were looking for notes for bivariate and multivariate analysis
Multivariate statistics or multivariate analysis in statistics describes a collection of procedures which involve observation and analysis of more than one statistical variable at a time. The word multivariate is defined as: "having or involving a number of independent mathematical or statistical variables" . Sometimes a distinction is made between bivariate (e.g., ANOVA, t-tests) and multivariate statistics. The special case of two variables is called bivariate.