The Prereqrossword

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Across
  1. 5. set of all possible elements in a situation
  2. 7. the most common number in a set of data
  3. 8. the number of different possible groups of objects taken at a time
  4. 10. intersection of sets with no similar elements
  5. 11. the principal square root of -1
  6. 13. the average amount by which individual items in a data set deviate from the mean
  7. 15. set of elements in the universal set not in a subset
  8. 16. the middle number in a set of data
  9. 18. a matrix B consisting entirely of values that are the additive inverse of a matrix A
  10. 19. a number multiplied by all positive numbers
Down
  1. 1. set with all elements contained in a superset
  2. 2. a collection of objects
  3. 3. the difference between the greatest and least value in a set of data
  4. 4. each object in a set
  5. 6. the number of possible outcomes of an experiment
  6. 9. set consisting of all elements from two other sets
  7. 12. a rectangular array of m rows and n colums
  8. 14. set consisting of all shared elements from two other sets
  9. 15. numbers with real and imaginary parts
  10. 17. the average value in a set of data