Statistics,

qualitative and/or quantative

Random samples

figuring mean, median and mode;

Scores of all kinds-  t-score, z-score, F-score and others.

Dependent and Independent variables.

Greek and Latin at times

Graphs of all types; line, bar, picture, chart.

Chartjunk!

To explain variance.

Also to explain the unexplainable to bring more understanding to what is going on whereverThe shapes of the world.