all over the map vs at sixes and sevens

all over the map

prep
  • In widely scattered directions; in a widely varying manner. 

  • Widely scattered or distributed; numerous and differing greatly. 

at sixes and sevens

prep
  • In a state of confusion. 

  • In a state of dispute or disagreement. 

How often have the words all over the map and at sixes and sevens occurred in a corpus of books? (source: Google Ngram Viewer )