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BUILT-IN MATHEMATICA SYMBOL
Standardize
Standardize[list]
shifts and rescales the elements of list to have zero mean and unit sample variance.
Standardize[list, f1]
shifts the elements in list by 
and rescales them to have unit sample variance.
Standardize[list, f1, f2]
shifts by 
and scales by 
.
Details
- Standardize shifts by a location and rescales by a scale estimated from the elements of list.
- Standardize[list] is effectively (list-Mean[list])/StandardDeviation[list] for nonzero StandardDeviation[list].
- Standardize[list, f1] is effectively (list-f1[list])/StandardDeviation[list].
- Standardize[list, f1, f2] is effectively
. - Common choices for
and 
include: -
Mean StandardDeviation zero mean and unit variance Mean 
shift to mean 0 Median 
shift by the median 
StandardDeviation scale to have unit variance - Standardize handles both numerical and symbolic data.
- Standardize[{{x1, y1, ...}, {x2, y2, ...}, ...}] effectively gives Transpose[{Standardize[{x1, x2, ...}], Standardize[{y1, y2, ...}], ...}]. »
- Standardize works with SparseArray objects. »
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