## Math

##### Across
1. 3. line a smooth curve fitted to the set of paired data in regression analysis; for linear regression the curve is a straight line
2. 5. coefficient when the regression line is linear (y = ax + b) the regression coefficient is the constant (a) that represents the rate of change of one variable (y) as a function of changes in the other (x); it is the slope of the regression line
3. 7. deviation the square root of the variance
4. 9. drafting instrument used to draw or measure angles
5. 10. interest interest calculated on both the principal and the accrued interest
6. 13. the quality of being valid and rigorous
7. 14. a variable quantity that cannot be resolved into components
8. 15. a straight line or plane that touches a curve or curved surface at a point but does not intersect it at that point
9. 16. extending or lying across; in a crosswise direction; at right angles to the long axis
10. 17. the people who inhabit a territory or state
11. 22. having the character of a polynomial
12. 23. circuit a circuit having its parts connected serially
13. 24. value the sum of the values of a random variable divided by the number of values
14. 25. curve a symmetrical curve representing the normal distribution
15. 26. a mathematical notation indicating the number of times a quantity is multiplied by itself
16. 27. a straight line from the center to the perimeter of a circle (or from the center to the surface of a sphere)
17. 29. a limited period of time
##### Down
1. 1. a straight line segment whose length is magnitude and whose orientation in space is direction
2. 2. of or in or along or relating to a line; involving a single dimension
3. 3. concerning each of two or more persons or things; especially given or done in return
4. 4. a datum that can be represented numerically
5. 5. scale a logarithmic scale of 1 to 10 formerly used to express the magnitude of an earthquake on the basis of the size of seismograph oscillations
6. 6. distance travelled per unit time
7. 8. the source or origin from which something derives (i.e. comes or issues)
8. 11. the amount per unit size
9. 12. complete change in character or condition
10. 17. maintain or assert
11. 18. a constant in the equation of a curve that can be varied to yield a family of similar curves
12. 19. the quality of being subject to variation
13. 20. ratio of the adjacent side to the hypotenuse of a right-angled triangle
14. 21. an idea accepted as a demonstrable truth
15. 28. ratio of the length of the side opposite the given angle to the length of the hypotenuse of a right-angled triangle