the.com/coefficient
the silent multiplier doing all the heavy lifting while the variable takes the credit
means A coefficient is a number placed in front of a variable that tells you how much to multiply it by, as the 3 in 3x.
from From Latin co- 'together with' and efficient (from efficiens, 'making, accomplishing,' from efficere, 'to bring about'). So a coefficient is literally that which 'works together' with the variable to produce a result — the partner in the multiplying. The term was popularized in mathematics by the French mathematician François Viète around the turn of the 17th century, as algebra was learning to speak in letters and numbers at once.
- origin
- coined by mathematician Francois Viete around 1591
- latin roots
- means working together with
- correlation
- ranges exactly from minus one to one
- invisible one
- every lone variable secretly has a coefficient of one
- gini score
- measures a nation's inequality in single number
gini coefficient — measures income inequality on a 0-1 scale, used by world bank to rank countries by wealth distribution
correlation coefficient — pearson's r ranges -1 to 1, quantifies relationship strength between two variables in statistics
drag coefficient — dimensionless number (0.2-1.5) that predicts aerodynamic resistance, used to design cars and aircraft