Support and grief state after neonatal death

Use this page to show that the conditional probabilities are found by rescaling rows (or columns) of joint probabilities so each row (or column) has the same total (1.0). E.g.

Click the formulae for the conditional probabilities to do the stacking.

(The values are actually sample proportions rather than probabilities but the diagram illustrates the concept.)

The diagram is based on a real data set which describes the state of grief of 66 mothers who had suffered a neonatal death and the amount of support given to them.

  Support
Grief state Good Adequate Poor
I 17 9 8
II 6 5 1
III 3 5 4
IV 1 2 5

The sample proportions are treated as joint probabilities in the diagram.