The recommendation:

For the goodness of fit, or table 2*2:

**Phi**=sqrt(

**χ2/n)**

For association:

DF'=min(row-1,cols-1)

Crammer's V=sqrt(

**χ2/(n*DF')**

But also the definition of small/,medium/large is divided by sqrt(

**DF')**

For example DF'=1 it is (0.1-small, 0.3- medium, 0.5 - large)

For DF'=2 it is small: 0.1/sqrt(2)=0.07 medium: 0.3/sqrt(2)=0.21 ..

So the Crammer's V= is divided by sqrt(DF') and also the scale.

So what is the point of using the Crammer's V ?

Why not only the

**Phi**???