Probable Error
The first Quartile of a standard Normal Distribution occurs when
The solution is
. The value of 
giving 
is known as the probable error of aNormally Distributed variate. However, the number 
corresponding to the 50% Confidence Interval,
is sometimes also called the probable error.See also Significance
- Confocal Conics
- Confocal Ellipsoidal Coordinates
- Confocal Parabolic Coordinates
- Confocal Paraboloidal Coordinates
- Conformal Latitude
- Conformal Map
- Conformal Solution
- Conformal Tensor
- Conformal Transformation
- Congruence
- Congruence Axioms
- Congruence (Geometric)
- Congruence Transformation
- Congruent
- Congruent Incircles Point
- Congruent Isoscelizers Point
- Congruent Numbers
- Congruum
- Congruum Problem
- Conic
- Conical Coordinates
- Conical Frustum
- Conical Function
- Conical Spiral
- Conical Wedge