How do I put two adverbs in a sentence like this one:
All independent variables simultaneously, significantly affect dependent variables
How do I put two adverbs in a sentence like this one:
All independent variables simultaneously, significantly affect dependent variables
All independent variables simultaneously, significantly affect dependent variables.
All independent variables simultaneously and significantly affect dependent variables.
All independent variables affect dependent variables [both] simultaneously and significantly.
For stylistic reasons and for readability I prefer version 2.
Note that there is some ambiguity. Do all independent variables affect all dependent variables? However that is a separate issue and has nothing to do with the placement of adverbs.