Nadir
The mathematical term for "mean" is "mean".The popular, or colloquial term for "mean" is "average".
No, the math term ratio doesn't mean multiply.
There is no statistical term such as "deviation mean".
mean: average
I'm not sure if you mean nadir or not but nadir is the term used to describe the race relations between blacks and whites in between Reconstruction and the Civil Rights Movement.
"Nadir" is the point below you - the point opposite to the zenith.
Off-nadir is a Hebrew idiom and the meaning is "something very rare." In remote sensing terms, the term 'off-nadir' (or 'look angle') is used to refer to any point that is not directly below a sensor, but off to an angle in any direction.
Nadir was Erik's friend from Persia.
nadar
Nadir Nadirov was born in 1932.
Nadir Lamyaghri was born in 1976.
Nadir D'Priest was born in 1961.
Nadir Benoufella was born in 1987.
Moyshe Nadir was born in 1885.
Moyshe Nadir died in 1943.
Mehmet Nadir died in 1927.