Maths Crossword Puzzle

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Across
  1. 4. The measure of how spread out the numbers in a data set are, often calculated as the square of the standard deviation (8 letters)
  2. 5. The specific name for a common difference in an arithmetic progression (10 letters)
  3. 6. The name for a polynomial with three terms (8 letters)
  4. 9. The set of all possible outcomes of a random experiment (6 letters)
  5. 11. The property of real numbers that allows changing the grouping of terms in an addition or multiplication operation without changing the result (11 letters)
  6. 12. The property of real numbers that states for any real numbers a and b, a+b=b+a (11 letters)
  7. 13. The value that divides a data set into two equal halves when arranged in ascending or descending order (6 letters)
  8. 14. For a pair of linear equations, a1x+b1y+c1=0 and a2x+b2y+c2=0. If a1/a2=b1/b2=c1/c2
Down
  1. 1. The specific term for a line that intersects a circle at exactly two points (6 letters)
  2. 2. The type of polynomial whose graph is a parabola (9 letters)
  3. 3. A line segment joining the center of a circle to any point on its circumference (6 letters)
  4. 7. The fundamental theorem of arithmetic states that every composite number can be expressed as a unique product of these (6 letters)
  5. 8. The point of concurrency of the angle bisectors of a triangle (7 letters)
  6. 10. In a right-angled triangle, the ratio of the adjacent side to the hypotenuse (6 letters)