I need your help once again (unfortunatelly). Below you'll find my regression model. But I don't know how to interpreted the Béta (ß) (standardized coefficents). I know it is meant to compare the variables, but how do I do that correct? When can I consider something big? I get that a value of 0,01 is small. But can I call 0,07 small? Can I call that 0,20 big? I know the beta is measured on a -1 to 1 scale. But on that scale a 0,20 is big.

What is the rule of thumb for this? I can't find it anywhere in my statistics manual.