AI glossary: terms starting with Q
7 terms starting with Q, each defined the way the lesson that teaches it uses it, with a link to every lesson where it appears.
- Q-Q plot
Paired quantiles from observed data and a reference distribution.
- quadratic
highest power two; its graph is a parabola
Example:
x²Taught in- quadratic form
xᵀAx, a quadratic built from a symmetric matrixExample:
2x² + 2xy + 2y²- quadratic time
O(n²): doubling the input quadruples the operations, as comparing every pair does.
Taught in- quantile
The value at a chosen cumulative fraction.
- quartile
A value dividing ordered observations at 25%, 50% or 75% under a stated method (NumPy and pandas interpolate linearly by default).
- quartiles
Quantiles at 25%, 50% and 75%.