Fairness

Question 1

What is a statistical bias?

Answer 1

Difference between estimators expected value and the true value

Can fail if for example the real world is biased for example percentage of rearrest - might be biased, while percentage of crimes might be less…

The question about this should be if it’ aligns with our values?

Question 2

What is group fairness

Answer 2

Do outcomes differ between groups?

It’s practically impossible to predict this without a trade off - if the data is biased.
For example the people going back to
Prison are effected by the rase but we won’t the model to be equal….
So or we will have a high false negative and realest people who will get back, or high positives in one group
Over the others