Question

Q.34 Transformations of this kind are usually referred to as feature
a. Transformations
b. Extraction
c. Scaling
d. Standardization

Answer 1

Answer:

Standardization.

Explanation:

Standardisation, whereby values are adjusted for

differing level and spread. In general

value - level

standardised value = -------------.

spread

Standardised values have level 0 and spread 1 and have no units: hence

standardisation is useful for comparing variables expressed in different

units. Most commonly a standard score is calculated using the mean and

standard deviation (sd) of a variable:

x - mean of x

z = -------------.

sd of x

Standardisation makes no difference to the shape of a distribution.