all over the map vs scattershot

all over the map

prep
  • Widely scattered or distributed; numerous and differing greatly. 

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

scattershot

adj
  • Covering a broad range in a random and unsystematic way. 

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