Power transform

<p>In <a href="/facts/Statistics/DNPsKGYU">statistics</a>, a power transform is a family of functions applied to create a <a href="/facts/Monotonic_function/MjQK0YL2">monotonic transformation</a> of data using <a href="/facts/Power_function/pac6QY2g">power functions</a>. It is a <a href="/facts/Data_transformation_(statistics)/6wqoUa66">data transformation</a> technique used to <a href="/facts/Variance-stabilizing_transformation/HvxV5l98">stabilize variance</a>, make the data more <a href="/facts/Normal_distribution/UapjjPyQ">normal distribution</a>-like, improve the validity of measures of association (such as the <a href="/facts/Pearson_product-moment_correlation_coefficient/Igf0xDPc">Pearson correlation</a> between variables), and for other data stabilization procedures.
</p><p>Power transforms are used in multiple fields, including <a href="/facts/Multiresolution_analysis/yQtKJuNx">multi-resolution and wavelet analysis</a>, statistical data analysis, medical research, modeling of physical processes, <a href="/facts/Geochemical_modeling/hFWGsDdz">geochemical data analysis</a>, <a href="/facts/Epidemiology/wgTmxoMA">epidemiology</a> and many other clinical, environmental and social research areas.
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Power transform open-in-new

Power transform