crossword puzzle: charts and graphs

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Across
  1. 1. to go up
  2. 4. the horizontal or vertical reference line on a graph
  3. 6. growth or progress over time
  4. 7. a drawing that explains something
  5. 9. looking at similarities and differences
  6. 11. a visual representation of data
Down
  1. 2. a graphical display of data
  2. 3. a sudden drop
  3. 5. to become flat or stop rising or falling
  4. 7. information collected for analysis
  5. 8. staying the same
  6. 10. the highest point