Graph for confusion matrix in deck 4 should be data agnostic

[hfrick]

It is currently tailored to the taxi data set by describing the possible values as "tipping yes/no". We should either update it, or, my preference, make it (more) data agnosting. Of course "yes/no" is not entirely agnostic either but a pretty good bet in future-proofing things.

It appears by itself in confusion-matirx.png and together with other metrics like in confustion-matrix-sensitivity.png. Maybe we should split those up, too.

[hfrick]

@EmilHvitfeldt Do you still have the source files for these pngs?

[EmilHvitfeldt]

Yes, I'll send them over later today

[EmilHvitfeldt]

They are right here https://github.com/EmilHvitfeldt/omnigraffle-diagrams

[hfrick]

thank youuu