Absolute Deviation
Let 
denote the Mean of a Set of quantities 
, then the absolute deviation is defined by
See also Deviation, Mean Deviation, Signed Deviation, Standard Deviation
- Relative Minimum
- Relaxation Methods
- Remainder
- Remainder Theorem
- Rembs' Surfaces
- Removable Crossing
- Removable Singularity
- Rencontres Number
- Rendezvous Values
- Repartition
- Repdigit
- Repeating Decimal
- Repfigit Number
- Replicate
- Representation
- Reptend Prime
- Rep-Tile
- Repunit
- Residual
- Residual vs. Predictor Plot
- Residue Class
- Residue (Complex Analysis)
- Residue (Congruence)
- Residue Index
- Residue Theorem (Complex Analysis)