Population stability index

Worked examples, recomputed

Every number the mechanisms quote for this relationship is recomputed from it, so none of them disagrees with it.

• three price buckets → PSI ≈ 0.0079

Where it appears

Each mechanism states it in its own names. The general symbol each name stands for is shown with it.

• Data Quality & Validation

  How do you check that data is right, when "right" is a claim about the world and not about the bytes?

  $$\Sigma (\text{actual}-\text{expected})\times \ln (\text{actual}÷\text{expected})$$

  Read it in place →