all in all vs on average

all in all

adv
  • Generally, all things considered 

  • Altogether 

noun
  • Everything that matters; the only thing of importance. 

on average

prep
  • Expressed as a measure of central tendency (usually the arithmetic mean). 

  • Usually, typically; as a rule; as often as not. 

How often have the words all in all and on average occurred in a corpus of books? (source: Google Ngram Viewer )