Fr.: regression linéaire
In statistics, a regression method that establishes a linear relationship between two random variables.
Fr.: regression nodale
For a ring inclined to the planet's equator, the points at which the ring crosses the equator (nodes) slowly move around the planet (regress) in a direction opposite to that of the ring's orbital motion. (Ellis et al., 2007, Planetary Ring Systems, Springer).
1) pasraft (#); 2) vâyâzi (#), vâyâzeš (#)
1) Astro.: → retrograde motion.
From L. regression-, from regress-, stem of regredi "to go back," from → re- "back" + gradi "to step, walk."
1) → retrograde.
Fr.: analyse de régression
A statistical technique used to determine the values of parameters for a function that best fits a given set of data.
hamgar-e vâyâzeš (#)
Fr.: coefficient de régression
The slope of the straight line that most closely relates two correlated variables.
Fr.: courbe de régression
A curve representing a non-linear relationship between two or more → variables.
Fr.: équation de régression
A mathematical expression that describes the relationship between two or more variables. It indicates the nature of the relationship and, in particular, the extent to which one can predict some variables by knowing others.
Fr.: fonction de régression
A mathematical function that describes the relationship between two or more variables in a set of data.
Fr.: droite de régression
regression of the nodes
pasraft-e gerehhâ , ~ gowzahrhâ
Fr.: régression des noeuds
The slow motion of the → nodes of the Moon's orbit in the opposite direction to the Moon's movement. This westward motion, caused by perturbations of other bodies, mainly the Earth and Sun, has a rate of 19.35 degrees per year, making one rotation in 18.6 years.