Eleven data handling keywords

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Across
  1. 2. I like to share
  2. 3. Five is my favourite number
  3. 4. Running Total
  4. 9. Just give me a quarter
  5. 11. I frequent the bar area
Down
  1. 1. I wonder who discovered trees in statistics
  2. 5. Fifty percent of my toys
  3. 6. From one end to the other
  4. 7. Just a quarter to go
  5. 8. Why am I so popular?
  6. 10. I am always in the middle