ESS210B
Prof. Jin-Yi Yu
Transformations
qIt can be shown that any frequency function can be transformed in to a frequency function of given form by
a suitable transformation or functional relationship.
qFor example, the original data follows some complicated skewed distribution, we may want to
transform this distribution into a known distribution (such as the normal
distribution) whose theory and property are well known.
qMost geoscience variables are distributed normally about their mean or can be transformed in such a way
that they become normally distributed.
qThe normal distribution is, therefore, one of the most important distribution in geoscience data
analysis.