Z
Term |
Definition |
| z-score |
the z-score measures how a score compares to the average in a group. A negative z-score means below average, a zero z-score is exactly average and a positive z-score is above average. $$z=\frac$$ where x is the score, $$\overline$$ is the average and sd is the standard deviation |
| zero | 0, nought. Zero has no value, it is neither positive or negative |
| zero | is often referred to as the zero of an equation, or the roots, the x-intercepts. To find the zeros of an equation, set y = 0 and solve for x |
| zeta | Greek symbol Ζ (capital), ζ (small) |
