Vocab crossword puzzle

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Across
  1. 2. the average of a data set, found by adding all numbers together and then dividing the sum of the numbers by the number of numbers
  2. 3. unfair
  3. 8. an exact part of the whole
  4. 10. random part of a whole
  5. 11. the difference between the smallest and highest numbers in a list or set
  6. 12. part of whole
Down
  1. 1. the average distance between each data value and the mean
  2. 4. the difference between the upper and lower quartile values in a set of data
  3. 5. is the value under which 75% of data points are found when arranged in increasing order
  4. 6. is the value under which 25% of data points are found when they are arranged in increasing order
  5. 7. the middle value of a sorted list of numbers
  6. 9. a whole group